here's the official word from mlb.com
Opening Day is just around the corner, and you'll be able to follow every pitch of the new season with MLB.com At Bat 2009, coming soon to the App Store.
During the offseason, At Bat will let you stay on top of all the MLB news with video highlights covering award announcements, free agent signings, trades and the Winter Meetings.
This version of At Bat will expire on Feb. 23, 2009, so don't forget to look out for MLB.com At Bat 2009 in the App Store this spring.
MLB.com At Bat works with iPhone 3G, the original iPhone, and iPod touch.