Does anybody have any idea when another mlb power pros game will be released? I'm really wanting to get this game but don't want to buy it and then 2 months later a newer, improved one hits the shelves.

You might as well.. despite it being the best baseball game on the Wii, not many people bought it, and it's unknown as to whether or not Konami will put another one out. Plus, the previous one came out in October of last year, so if anything can be expected, the next one would come out in another six months.

EDIT: Upon searching around the internet a bit, I found some confirmation on official forums that 2k sports and Konami are making a new Power Pros for 2008. Rumors have it that it will come out in July, but I would expect it to come out in August or September. Either way, the current Power Pros game is still great fun, and I'd say it's worth getting until the new one comes out!