Trailer for these games available at Nintedo website E3 section: http://e3.nintendo.com/
(Precise Developer info gathered from NCL Website's E3 Section): http://www.nintendo.co.jp/n10/e3_2009/details/wii_new_super_mario.html
Games with video on NCL's website (10 Wii Games + 2 DS Game + 1 DSiWare Game):
Nintendo - New Super Mario Bros. Wii
Nintendo - Wii Fit Plus
Nintendo - Wii Sports Resort
Nintendo - Super Mario Galaxy 2
Nintendo + Co-developed: Tecmo/Team Ninja - METROID: Other M
Nintendo/Treasure - Sin and Punishment 2
Nintendo/ARIKA - Endless Ocean 2
Nintendo/ARTOON - Span Smasher
Nintendo/MONOLITHSOFT - Monado: Beginning of The World
Nintendo/GREZZO - Line Attack Heroes
Nintendo - Legend of Zelda: Spirit Tracks
Nintendo/Camelot - Golden Sun DS
Nintendo (Nintendo Software Technology Corporation) - Mario vs. Donkey Kong: Minis March Again [DSiWare]
Other Games by Category:
Wiiware:
PictureBookGames: Pop-Up Pursuit
You, Me & the Cubes
DS:
Mario & Luigi: Bowser’s Inside Story
Pokemon Mystery Dungeon:
Fossil Fighters
Professor Layton and the Diabolical Box
The Legendary Starfy
Style Savy
Glory of Heracles
WarioWare D.I.Y.
Picross 3D
DSiWare:
Flipnote Studio [I believe this is "moving memopad" in Japan, right?]
Comment: I am just listing the games on their website, enjoy.
Edit: I forget to mention not everything announced is news to us, some are games we know already with different names to be released in NA
I am a PC gamer, and also have a NDS now, but without access to a Nintendo Wii until End of 2007.
Currently playing: Super Smash Brothers Brawl(Wii), Mystery Dungeon: Shiren the Wanderer(DS), Dragon Quest Heroes: Rocket Slime (DS), WiiFit(Wii)
Games Recently Beaten: Final Fantasy Crystal Chronicles: My Life as a King (Normal; Very Hard after the next DLCs become available)
1 word: RTFA