The key to this is who would develop the game and the reasonability of them completing a game this year based on when their previous game was released:
EAD 1: Probably won't come from this group, they just released MK last year.
EAD 2: Releasing Wii Sports Resort- probably also working on something else. Maybe Starfox as Katsuya Eguchi directed the SNES original and the DS game. Whatever it is, probably won't be ready this year.
EAD 3: We know they are working on Zelda- will it be ready by the end of the year?
EAD 4: Probably making New SMB 2 for DS and Pikmin 3. Not sure Pikmin 3 will be released this year given Nintendo is releasing 2 Pikmin game this year (Wiimakes)- they may want to wait to next year to avoid overkill
EAD Tokyo: Last game was 2 years ago (Mario Galaxy) so we should be seeing something from them. Given what Takao Shimizu has worked on in the past, it could be DK or a Galaxy follow-up.
Retro: As EAD Tokyo, last game was 2 years ago- we should see their new game this year
HAL: Kirby's Adventure
Sora: 2011 at earliest
Monolithsoft: Probably Soma Bringer 2 DS and an RPG Wii- probably not this year though as their last DS and Wii games were just released last year.
Gamefreak: Just released Pokemon Plat
Genius Sonority: Last worked on DQ: Swords. Their website featured some art for what appeared to be a new IP- doubt it will be released this year
BrownieBrown: Recently said they were interested in Wii development so whatever it is it is still early (if started at all)- maybe an action/rpg
AlphaDream: M&L 3
SPD1: Made in Me and Wario Ware for DSi
SPD2: Maybe working on Sin & Punishment 2 as Hitoshi Yamagami worked on the original w/ Treasure. Dr. Mario DSi?
SPD3: Usually works with 3rd parties on Nintendo IPs so probably Punch-Out (Next Level Games), Excitebots (Monster Games), and maybe Golden Sun for 2010 (Camelot).
Intelligent Systems: Working with SPD1 on Wario Ware and Made in Me DSi. Could also be working on Advance Wars DSi and Fire Emblem Wii.
NST: Who knows whats going on with them- maybe 1080 since Masamichi Abe worked on the series in the past- could be 2009 title
Factor 5: Kid Icarus? Who knows- they are supposedly working on something from Nintendo that was supposed to release last year but financial troubles set them back.
Misc: Dynamic Slash (Sandlot), Cosmic Walker (Gaia), Endless Ocean 2 (Akira), Line Attack Heroes (Grezzo), Tact of Magic (Taito), Spawn Smasher (Artoon), Kensax
So, what does that leave us for Wii in 2009:
Excitebots
Punch-Out!!
Wii Sports Resort
Sin & Punishment 2
Kirby's Adventure
Factor 5 game (Kid Icarus?)
NST game (1080?)
Retro's Game
EAD Tokyo's game (Galaxy 2?)
For DS/DSi:
Mario & Luigi 3
Fire Emblem
Kirby
Pokemon Platinum
Rythym Heaven
New Super Mario Bros 2
Made in Me
WarioWare
Dr. Mario
