They recently switched Call of Cthulu to a new distribution model, getting rid of the monthly packs and instead doing an expansion box every four months, so it's a possibility. I do expect them to go with the "traditional" monthly pack / occasional expansion box model that they are using for Game of Thrones and Lord of the Rings, and I think it'll work well for this game.
In other games, the monthly packs come in sets of 6, so I expect it'll be the same for Netrunner. In Game of Thrones, each set focuses on a specific theme or mechanic, sometimes introducing new mechanics, and each monthly pack contains cards for every faction. Again, this I expect to work very similarly in Netrunner. Game of Thrones had 6 box expansions, each with a focus on one of the factions. This I'm not sure about -- they might do something similar for Netrunner (netting us at least 7 expansion boxes), but I wouldn't be surprised at all if the expansion boxes worked differently for Netrunner. Maybe looking at what Call of Cthulu did would be more telling, because I think Netrunner is more similar to that than to Game of Thrones, probably.