I think Mario and Zelda could both launch for holiday 09.
Mario Sunshine Play on Wii and Zelda Wind Waker Play on Wii, that is.
I'm not sure about Mario Party 9... Nintendo have already broken with pattern by not releasing it in 08, so they may have a different course planned for that franchise from here on out.
I could see Wii Sports Resort being delayed to the holidays. The E3 demo was pretty bare-bones. And unless MS or Sony start going after the expanded audience aggressively, there is little need to get Sports Resort out soon. From the timing of its announcement, I think the game was intended as a counterattack, but now there's nothing to counter.
There's a pretty huge slate of second and third tier titles for 2009, between the Play on Wii games, Punch-Out, S&P2, a variety of titles announced for Japan which may go international, Pikmin, etc... But other than Sports Resort, there isn't another 10 or 20m seller on the horizon... So it will be interesting to see what else Nintendo has up their sleeve.
"[Our former customers] are unable to find software which they WANT to play."
"The way to solve this problem lies in how to communicate what kind of games [they CAN play]."
Satoru Iwata, Nintendo President. Only slightly paraphrased.