Pikmin 3: somewhat announced during E3 2008 but we have not had any further details since. The title is not listed for Nintendo's 2010 release schedule.
Yasumi Matsuno's Wii project: Matsuo is the producer for Fainfal Fantasy Tactics and Vagrant Story as well as the creator/supervisor of FFXII. He was once reported to develope a Wii title in 09/2006 (source) but no further information was released since. With the surprise reveal of The Last Story from Sakaguchi last week, will we have another surprise reveal for Matsuno's project in the future?
Sadness: was originally announced on E3 2006 as a mature title for Wii and a trailer was shown. It gathered everyone's attention because of its unique style and the mature game status on Wii. However, we have had no updates since.
Star Fox Wii/F-Zero Wii: These are two of the most inquired Nintendo franchises that have not had any games on Wii or DS for a long time. Will they be the next wave of popular Nintendo franchise that get the Wii treatment?
Kid Icarus Wii: Only because Matt at IGN said so.
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I did not include Kirby Wii on the list since there is some hints showing it might be released for Wii soon. It would have been an easy choice if Kirby Wii is on the list.
Personally I'd go for the other abvious choice which is Pikmin 3. At least I think Nintendo is doing "something" about it and will be out eventually. I had high hope on Matsuno's game as well as Sadness, but the lack of information for both titles probably means they were secretly canned.
MikeB predicts that the PS3 will sell about 140 million units by the end of 2016 and triple the amount of 360s in the long run.