I just got my blackberry tour for sprint and plugged it in yesterday through desktop manager. It said no update available. I thought 5.0 was released for sprint.
Posted from my CrackBerry at wapforums.crackberry.com
Rim actually pulled the update from DM because there were problems with the update deleting BBM off of some tours. You can still download it from RIM or go to Sprint - Software Downloads - Select your device type and then run the .exe file on your computer for DM to install it