Impossible to say but there's almost always one though for me. I'd go nuts if they announced KOTOR 3 and FF15 for near launch releases on either new system.
GameCube: Launch, Nintendo fanboy
PS2: Hajime no Ippo: Victorious Boxers and MGS 2 (FFX coming out a few weeks later helped), huge Ippo and MGS fan
Xbox: KOTOR, huge Star Wars fan
PSP: Launch, no real game specifically
NDS: Launch, Nintendo system
Wii: Launch, Nintendo fanboy
Xbox: Oblivion, huge Elder Scrolls fan
PS3: MGS4, huge MGS fan
3DS: Launch, Nintendo system
PSV: Launch, Katamari and PSP games
Wii U: Pikmin 3 when it comes out (first Nintendo system since the N64 I didn't get on launch day.. includes handhelds)
X720: ?
PS4: ?