UPDATE: The return time for the test server has been bumped back by a half hour to 11:00 PM PDT.
Official Blizzard Quote:
We're in the process of bringing down the Diablo III test server to deploy a patch and wipe all characters to continue the testing process (http://us.battle.net/d3/en/forum/topic/3424470536).
We anticipate the downtime to last until approximately
For a thorough list of the issues the team is already looking at for beta five, see Vasadan's Current Known Issues thread. This post will be updated with the patch notes as soon as they are available. (UPDATE: See here for the patch notes!)
"Downtime has been extended until approximately 11:00 p.m. PDT to complete the patching process."
Now, really excited about the new wave of beta keys...
Hope I could get in ah!
http://www.diablofans.com/topic/31620-diablo-iii-beta-patch-5-complete-notes/