Anima is very rules-heavy, though, so often times the combat becomes very slow and splintered, because first you have to calculate the rolls and the accuracies and the spells and the ki and the whatever, and once all that is done, THEN you can narrate. It gets a little tiresome after a few rounds. If you want a comparison, take Dark Heresy for an example.
First I would advise having your players calculate most of that themselves. If you can trust them not to cheat there shouldn't be a problem. Spend time making ability charts so the players have all their information written down and never have to consult the book, that way the only time the book will be needed is if you need to make sure the player read the ability right.
Have any players with Ki abilities calculate how many turns each ability takes both with normal, and 1/2 normal accumulation. Make sure they know the limits and specifics of what their abilities do.
Have Psychics copy down the tables explaining their powers, and if you can, get two different colors of dice so they can roll their projection and potential at the same time. While their at that they might as well copy the table explaining how far their abilities can project.
Have mages make spellbooks including: What the spell does, Zeon cost, what each +10 zeon does, rather it's passive or active, the maintenance cost, and any other information on the spell that is needed. Also have them copy the table explaining how far they can project their spells.
Have Summoners copy down the cost, difficulty, attack, defense, active/passiveness, the effect and duration of invocations they have, and the tables explaining how time effects summoning. Then give them a copy of any creature they can summon, and have them write down the summon/control/bind/banish they have to get to summon/etc. that creature, also have the table of what bonuses you gain for pacts.
If they all have copies of everything they will use for combat in front of them combat goes alot faster. and if they know what they are going to do when their turn comes around I find a turn can be completed in some 30seconds, including all rolls, it takes considerably longer if they need to look up anything whatsoever. Then if they ever have to look something up in the book have them write it down. That way they never have to look it up again.
Anyway that's what I would do. As per Arcana Exxet, Those Who Walk Amound Us comes out this year (Hopefully), if they translate the Character Dairy and Character Folders (don't know what those are but they are on wikipedia) then they have those three and the Core Exxet before Arcane Exxet. So anywhere between 1 year (If they continue to translate 2/year and skip right to core/arcana exxet) or 5 years (if it takes 1 year for everything above). I would suspect 2-3 years before it is out, but that is just a guess.