and this too... so i'm pretty sure it's not a DM update.
A couple of things make me lean towards something other than this being an official 5.0 release:
1. Sprint still shows 4.7.1 as the official version for the Tour (which is the carrier your profile indicates).
2. Version 5.0.230 has been posted as a leaked version.
3. Other Sprint Tour owners haven't been busting loose letting everyone know that 5.0 is available for the Tour. There have been no posts by the Crackberry folks, which there always are when there's a new release.