Just to let you know, I did used the search feature, and only got ones saying "do you think it'll come out" "oh, it'll be sweet if it comes out" and "guitar hero would be so awesome on the wii. WIIIIIIIIIIIIIIIIIIIIII!!!!!!!!!!!" No I started one if there was any news about it being confirmed.
And I don't have a PS2. There will, however, be a Wii Music game (or something to that effect) which includes some form of drumming.