I don't think Wii will sell as much ths year as it did last year but I don't believe it has peaked just yet. I think 2010 will show sales higher than 2008 with a huge boost in momentum coming out of the holidays with Wii Sports Resort still selling strong, Wii Fit Plus replacing Wii Fit and also selling to owners of the original, New Super Mario Bros. Wii becoming Mario Kart Wii's replacement and a huge amount of exclusive (Mario and Sonic at the Olympic Winter Games, Dead Space, Spyborgs, Red Steel 2) and non-exclusive (Guitar Hero 5, The Beatles: Rockband, Need for Speed: Nitro) titles pushing the console to greater heights.
Next year will also push momentum with core games like Sin and Punishment 2 and No More Heroes 2 and casual titles like Endless Ocean 2 will continue to push the console. Mario Galaxy 2 will do more for software sales than hardware but Metroid: Other M and Wii Vitality will push hardware a little more.
I think 2010 will be bigger than 2008 but 2009 is a bad transition year that has been condemned due to a bad second half of 2008 compounded by an equally bad first half of 2009.
