Starting yesterday (Feb 14th), a few RAD Studio iOS developers have been experiencing provisioning issues, due to the expiration of an Apple intermediate certificate, not of their own developer certificate. See the following links for more information and how to fix the issue:

While this is mentioned on Google+ and I could have tweeted a link, I have the impression this is going to hit quite a few developers in the coming days and weeks, so I felt it was better to capture it in a blog post as well.