Post the upgrade, I'm not seeing some paid for apps. I called Sprint, and they transferred me to HTC. HTC has escalated the issue internally and should be getting back to me.
If others are having the issue, you may also want to call in so that they are aware of how widespread the issue is.
What I suspect is that the signature of the phone changed and HTC needs to inform Google that this new signature is valid released production code.
The issue is that DataViz Documents-to-Go (full), and Sprite Android Backup (full) are no longer visible to the phone.
(Those are the 2 apps I've paid for).
Other apps seem to have the issue as well based on other forum posts.
Please call HTC ( 866-449-8358 ) and report what apps you are no longer seeing.
Thanks!