Nintendo can barely be bothered to support their own peripherals, the idea that they'll do 2 Udraw games is kinda laughable. I've no clue how that rumor got any traction?
For reference, Nintendo's "support" for previous Wii peripherals, alternate controllers and add-ons...
Wii Classic Controller / Pro
- Fire Emblem: Radiant Dawn (Intelligent Systems) 2007
- Super Smash Bros. Brawl (Sora / Game Arts / various) 2008
- Mario Kart Wii (Nintendo EAD) 2008
- Sin & Punishment: Star Successor (Treasure Video Games) 2009
- Endless Ocean: Blue World (Arika) 2009
- Zangeki no REGINLIEV (Sandlot) 2010
- Xenoblade (Monolith Soft) 2010
- Super Mario All-Stars Limited Edition (Nintendo EAD) 2010
- The Last Story (Mistwalker / tba) 2011
Wii Zapper
- Link's Crossbow Training (Nintendo EAD) 2007
- Sin & Punishment: Star Successor (Treasure Video Games) 2009
Wii Balance Board
- Wii Fit (Nintendo EAD) 2007
- Wii Music (Nintendo EAD) 2008
- Punch-Out!! (Next Level Games) 2009
- Wii Fit Plus (Nintendo EAD) 2009
Wii Wheel
- Excite Truck (Monster Games) 2006
- Mario Kart Wii (Nintendo EAD) 2008
- Excitebots: Trick Racing (Monster Games) 2009
Wii Speak
- Animal Crossing: City Folk (Nintendo EAD) 2008
- Endless Ocean: Blue World (Arika) 2009
Wii Motion Plus
- Wii Sports Resort (Nintendo EAD) 2009
- Zangeki no REGINLIEV (Sandlot) 2010
- FlingSmash (Artoon) 2010
- The Legend of Zelda: Skyward Sword (Nintendo EAD) 2011