The announcement that the multiplayer content is always going to be free is enough to pique my interest. I really loved the first game, but it wasn't the best matchmaking system around, made worse when they started releasing DLC which completely segregated the community. Those kinds of paid DLC packs for multiplayer only work for games which have millions of establish players like CoD and Battlefield; it just kills smaller games. You couldn't get a game of CTF on half the maps after a few months on Titanfall 1.
Might not buy it, but I'll definitely be keeping an eye on this as it develops.
I'm waiting to see what the SP is like in the new CoD before committing to one of the big three.
Blah! It's times like these I wish I had a current gen console again. Buy the current hot game, get my fill and trade it in against the next one. Just can't be spending 50 quid a go on all these MP focused games that I'll only play the SP portion of.