It seems Yahoo was happy enough with their exploits in S60 land to bring their ragtag group of applets to another demographic. This time around, Windows Mobile gets the honors, offering the typical set of Yahoo-themed channels: Search, Mail, Calendar, News, and so on; strangely, Messenger seems to be left out of the equation. Compatibility is apparently fairly wide on this one, so if you can tolerate the lack of text messenger du jour, pull out that Q / 2125 / UBiQUio 501 of yours and get your Yahoo on, eh?
Update: As you can clearly see from the screen shot, Messenger's included -- it looks like you won't have to do without text messenger du jour after all. Sorry, Yahoo!