Wish I hadn't bothered
I upgraded and wish I hadn't, of all the apps missing the 1 I really needed was included, my paid for backup/restore software. Fortunately I could get an apk from the developer.
So far I can count about 4-5 I can't get to but should be able to, and yes they do seem to be copy protected ones as they are all ones I couldn't back up prior to the update.
Tweeted @HTC (as have a fair few others) and not had any response, but then I guess I should probably have bothered using the proper support channels.