Links and release notes are on the Updates page but download link is dead. I guess it'll be up soon? I hope there's more to it than just HDV templates (what the release notes say), there are a few bug fixes I'd like to see.
From what I saw, there were not enough changes to warrant a C relase so they skipped to D. The only thing the change log shows is the HDV templates that were included. So unless you are using HDV, it appears the upgrade is not a fix for anything.