The patch is released. There are direct links to mirrors everywhere (like here) so it shouldn’t be hard to bypass Blizzard’s downloader.

This and all the past patches are archived and available here. Also accessible from the “repository” link on the sidebar.

As always many players (me included) are having probems applying the patch and there are some complaints on the technical forums. I have updated my guide that should help to check the file integrity and monitor step by step the patching progress to understand what exactly is going wrong.

P.S.
I *hate* “Blessing of Sanctuary” sparkling effect, it hits on my nerves. Hard.