Single player campaign and multiplayer PVP, if there is a co op mode I haven't heard about it. Others may have more information.
I wonder if harvester defence will come back? Quite enjoyed that mode, but they need to remove challenges from it this time.
Yeah, it was a good wind up / down. A couple of mates that came to Titanfall late found it handy to get the feel before multi player
And lets not forget it was a great leveling up tool also. Would be great to see it or something like it again. I'll be looking out for you and some of these others in... a few hours from now.
I haven't heard anything about Frontier Defense making a return or any co-operative MP modes. If they announce it, I'll be sure to post back in here ASAP.