Which games do you predict to be launch titles?
I think there will be a lot of cross generation games. Take Call of Duty for example. I think it will release on PC, 360, PS3, WiiU, Xbox Next, and PS4 all at the same time. If you purchase the PC, Xbox Next, or PS4 versions you will get all the bells and whistles (more players per game/better graphics etc.). I think they will try to support current gen systems excluding the Wii for at least 3 years after the next gen consoles release.
Here are some of the games that I think will be Next Gen/Cross Gen:
Assassins's Creed (unannounced title)
Call of Duty (unannounced title)
Halo (unannounced spin-off title)
Rainbox 6: Patriots
Star Wars: 1313