Recently, there is a rumor circulating the web that reveals that HW2 will be an episodic release.
I don't know. In one part, CA could make the game more polished and not rushed by the schedule (some info pinpoint the start of the development of this game around 2014) but in other hand, the game could be tagged as "incomplete, a 60$ release not worthy enough, thanks to Sega the devil,etc." and the PR will be throw down to the garbage.
One way or another, I think this game will be released in episodes as Free DLC being the first one a much larger campaign than the others but not completed; and also a polished Multiplayer from the get go with a plenty bunch of modes and maps(Not like Splatoon).
That's my guess for this AAA release.