Saga edition is a d20 system, it's a variant of Dungeons & Dragons 3rd edition disguised as Star Wars. There is a lot of fiddly math and levels and headache inducing stuff. Everything is pass/fail and no nuances.
FFGs Star Wars rpg is the good stuff. Better written, more lore and looks awesome. Not awkwardly square.

Updated to include the Region & Upbringing rules in Path of Waves.

My speculation on which new Schools we will get in the book:
Crab: A Kuni [something]
Crane: Asahina Archer or Kakita Artisan
Dragon: Agasha Armor/Weaponsmith
Lion: Matsu Beastmaster
Phoenix: Ishikin (Void Adept)
Scorpion: Soshi Shadow Adept
Unicorn: Iuchi [something]
Centipede: Priestess of the Sun

Awesome

Talked about it on ffg live my screenshots are to big to post.  Bottom line up from RPG’s will continue there will be a announcement about the rumors soon.

My speculation on which new Schools we will get in the book:
Crab: A Kuni [something]
Crane: Asahina Archer or Kakita Artisan
Dragon: Agasha Armor/Weaponsmith
Lion: Matsu Beastmaster
Phoenix: Ishikin (Void Adept)
Scorpion: Soshi Shadow Adept
Unicorn: Iuchi [something]
Centipede: Priestess of the Sun

Several "missing" Schools:
Crane: Asahina Archer, Daidoji Harrier, Daidoji Scout, Doji Rhetorician, Kakita Artisan
Lion: Akodo kensai, Matsu Beastmaster, Ikoma Historian
Phoenix: Asako Henshin, Isawa Void Adept
Titles: Sensei, Lion Deathseeker

FFG also stops publishing their small hardcover novellas. Aconyte, an Asmodee subsidiary takes over publishing Legend of the Five Rings, Arkham Horror, keyforge and Descent paperback novels. Their first L5R novel, Curse of Honor is due in May.

Updated for the Titles and Schools in Path of Waves.
Path of Waves also has an entirely new Character Creation approach, which goes "Region - Upbringing - School" rather than "Clan - Family - School" to represent characters which do not fit within the "standard" L5R model. Do people want me to include those in the OP?

I picked up my copy late last night. Taking a turn through it, it's going to be interesting getting it up on here, but I definitely like how it handles things.
I would consider Path of Waves a must-buy for the new Trinket table alone, but the list of Rokugani and non-Rokugani names is incredibly helpful for all games. The new Kata and Shuji I want to take a look at. And I like the new 20 Questions for Character Creation. I would say that that this is the most accessible "Ronin" L5R ever, and I am looking forward to digging deeper.

There are three main types of adventuring parties in Rokugan.
Emerald Magistrates and their assistants. They are Imperial troubleshooters.
Clan Samurai with a few allies/friends/observers/guests from other Clans doing Samurai stuff.
Ronin who don't belong to a Clan just trying to survive.
Emerald Empire is the sourcebook with lore and adventure seeds.

There are three main types of adventuring parties in Rokugan.
Emerald Magistrates and their assistants. They are Imperial troubleshooters.
Clan Samurai with a few allies/friends/observers/guests from other Clans doing Samurai stuff.
Ronin who don't belong to a Clan just trying to survive.
Emerald Empire is the sourcebook with lore and adventure seeds.

There are three main types of adventuring parties in Rokugan.
Emerald Magistrates and their assistants. They are Imperial troubleshooters.
Clan Samurai with a few allies/friends/observers/guests from other Clans doing Samurai stuff.
Ronin who don't belong to a Clan just trying to survive.
Emerald Empire is the sourcebook with lore and adventure seeds.

So, out of curiosity, I've been mulling over what kind of schools/concepts are there that are missing from this edition so far.
 
Crab: I actually don't feel that there is any school that requires representation? Hida pragmatists could be represented by more unarmed kata really
Crane: Kakita Artisans! We have sword smiths, but no Artisans
Dragon: Agasha Alchemists and/or Yamabushi are what I feel are missing so far. Otherwise..probably everything we have?
Lion: Matsu Beastmasters, and that's about it?
Phoenix: Isawa Ishiken and Henshin. Titles for Tensai. Shiba Illusionist
Scorpion: Shosuro Butei! Maybe Soshi magistrates.
Unicorn: Utaku infantry? I did like some of the horse related schools, to raising and caring for animals.

There are three types of L5R campaigns. The usual type is a group of Emerald Magistrates of samurai from different clans. Then there isthe Clan specific campaign with all PCs belonging to one Clan and that Clan's major allies. The last type of campaign is the Ronin/Gaijin campaign with PCs doing their own thing.
The Beginner Game, Palace of the Emerald Champion, Dark Tides, Mask of the Oni adventures all assumes the PCs are Emerald Magistrates. Wedding at Kyotei Castle and Winter's Embrace are one-shots for samurai strangers but are easily adapted to an Emerald Magistrate campaign.  The upcoming Sins of Regret and this years GenCon adventure are for Ronin/Gaijin but should be easily adaptable for an Emerald Magistrate campaign also.

Specificaly: The Beginner Game: Ends with the PCs being selected to be Emerald Magistrates, 
                   Palace of the Emerald Champion: is their "training" and test to make sure that they are indeed capable, both investigatively AND politically.
                    Dark Tides, is their first case, and is alluded to at the end of Palace of the Emerald Champion.
                  Mask of the Oni is a continuiation of this same Magistrate Campaign.

             Wedding at Kyotei Castle and Winter's Embrace are a separate, Court campaign, that, of course, can be tweaked to fit into the Magistrate Campaign, or be held as a separate campaign all on its own.

There is the Bayushi Elite Guard mentioned in The World, A Stage - I suspect they would be a title rather than school, since they're not 'trained from gempukku' individuals but rather picked to join it once recognised as awesome (Bayushi Shoju picking their new commander personally in that story)
I think the Elite Royal Guard of the Crane was always specifically the 'Empress' Guard' - whilst they might nominally protect any royal family member, they were legally speaking there to protect the (almost always Doji-born) Empress and/or Empress Dowager, since there was a historical precedent for that with Doji Haranobu right back at the birth of the Empire.  

Like a Ghost is Batman disappearing.

The Kolat Saboteur from Emerald Empire also gains access til Ninjutsu.

I think it is black and white as those are the colors of the Deer mon.

I like the general thrust of this idea. I think you can easily use this to represent anyone from a Great Clan (or an imperial family) who has learned more from trial and error than any formal curriculum. They would socially enjoy the benefits of being part of a Great Clan...but not have their signature moves for better or worse.
I don’t know that all Clans would have a similar school that churns out lots of “light infantry.” That part I might disagree with. Honestly I think the WR is the most flexible platform for a PC currently available. Your WR PC might or might not look like light infantry (a courtier, heavy infantry, an archer etc etc) based on the skills, katas and feats you take at creation. They might or might not excel at things a clan and family value... They might officially be part of another formal Clan school...but obviously don’t fit in. This can be from a student who  challenges conventional wisdom at every possible turn, or someone whose mechanics are just derived from "seeing the world” on “a gap year” where everything starts clicking..
i would be at least a little careful of equating WR as anyone who isn’t good enough to get into the families “elite schools.” Certainly that could be your backstory. But it probably isn’t the backstory of thousands of similar NPCs. Worldly Ronin represent the best of the wanders, who have the potential to achieve 6 ranks in a skill (enlightenment!) and perhaps revolutionize a field. Most Samurai much less Ronin are not that worldly... 

Some thoughts on Worldly Ronin as Clan Samurai. The implication of this school is that some Samurai start their training in an official dojo and then decide to go on the Warrior’s Pilgrimage, see some of Rokugan and return and serve as loyal Samurai.
My thoughts on how the Clans see the Worldly Ronin/Samurai.
Crab Clan:
The Crab train few Worldly Samurai.Usually only Hida runts and Kaiu and Yasuki for whom math is too hard do this.Hiruma all train as Scouts and succeed or die trying.Kuni who don’t qualify for Purifier or Warden find another niche in the clan.
Crane Clan:
Asahina non-Shugenja who are not trained as Courtiers with the Doji are trained as Worldly Samurai and due to their pacifism specialize in archery. The Daidoji train a large number as Worldly Samurai to serve as light infantry in their armies. The Doji are renowned for their Courtiers but the majority are trained as Worldly Samurai and serve in their army and as guards. Only the best and brightest of the Doji get training as courtiers or train with the Kakita. Only the best and most talented of the Kakita are trained as Duelists or Artists, the rest get trained as Worldly Samurai and serve in their army. Many young Cranes choose to go the Warrior’s Pilgrimage.
Dragon Clan:
The Dragon Samurai who don’t have the coordination for the Niten style or the intelligence to train as Kitsuki Investigators, train as Worldly Samurai and serve in the Dragon’s military. A few go on the Warrior’s Pilgrimage.
Lion Clan:
Only the best and brightest of the Akodo are allowed to study at the Akodo War College, everyone else are trained as Worldly Samurai to serve in the armies. Only the fiercest of the Matsu are trained as Berserkers. Some Ikoma are trained as Worldly Samurai and serve in the armies. Kitsu non-Shugenja are all trained as Medics. Many Worldly Lion Samurai go on the Warrior’s Pilgrimage.
Phoenix Clan.
Very few among the Phoenix are trained as Worldly Samurai.
Scorpion Clan:
Many Bayushi and Shosuro are trained as Worldly Samurai to serve in the Scorpion army. Usually those who are bad at acting and lying, it brings confusion to the Scorpion’s enemies.
Unicorn Clan:
Very few are trained as Worldly Samurai, usually the poor souls with the Hunted by Chikusho-Do adversity.
Some among the Minor Clans but none among the Imperial Families are trained as Worldly Samurai.

I can buy into that logic. 

I would say though that the students of the Shiba school who do NOT take to the yojimbo training very well may become worldly ronin and serve as part of the clans few standing infantry units.  This would also work well for the Kaito with a martial bent, but that are not very proficient with the bow, much less the rigorous fidelity to faith that is required of the Shrine Keepers.  There may only be the Shiba school, but that does not mean that those who start the training in said school take a different path to finish their education.  I am taken with the Phoenix clan so it is easy for me to work novel concepts into the existing structure of the clan.

Back in the 3rd edition the Ronin schools also doubled as Generic XYZ schools, where "the schools simply represent a more intuitive path that a samurai has chosen to follow rather than an established style" (quote directly from the 3e rulebook) so there's precedent for treating the Worldly Ronin as such.