Ok these are some rumors:
http://www.cube-europe.com/news.php?nid=6337
1st party:
Custom Robo
Donkey Konga
GEIST
Giftpia
Golden Sun
Mario 128
Mario Tennis
Metroid Prime 2
Paper Mario
Pikmin 2
Wind Waker 2
Zelda Four Swords
3rd party:
Call of Duty (Activision)
True Crime 2 (Activision)
Killer 7 and Resi 4 (Capcom)
SSX 4 (EA)
Timesplitters 3 and Second Sight (FRD)
The Movies (Lionhead)
Unity (Lionhead)
RIDGE RACER 6 (Namco)
Starfox GC plus Baten and Tales
Prince of Persia 2 (Ubisoft)
Monkey Ball 3 and Virtua Fighter (SEGA)
Ok the 1st party sounds pretty good. Hope it's true!