68soul on 23 September 2009
Just for the fun (but who knows): it will be a launch title for the next Wii in 2012, and will be at the same time the last 1st party "old Wii" game... history repeats itself...
More seriously, i don't see it coming in 2010... they had nothing to show this year, and for a game like this, they make an official trailer at least one year before the release, not 3 or 6 months...
And in most of recent Myamoto interviews, you can guess they have most of the basic ideas, but also that they're not that far away in the game's development... plus, they will need extra-time for extra-polish, to be sure not to disappoint... december 2010 would be very optimistic...

"A beautiful drawing in 480i will stay beautiful forever...
and an ugly drawing in 1080p will stay ugly forever..."