Blizzard postponed the Diablo III Patch 13 until sometime between Saturday and Sunday. It's coming, don't worry. Check Blizzplanet and other fansites to find out when patch 13 is available.
To ensure that all systems and changes included in Beta Patch 13 are working properly, we've decided to take some extra time to continue internal testing. As a result, we will not be releasing Beta Patch 13 today. We will, however, be working through the weekend and look forward to delivering the patch on either Saturday or Sunday.
Thank you for your patience! Should any changes to this schedule occur, we'll be sure to provide an update in this thread.
We're currently in the process of preparing the next beta patch for release and wanted to provide all beta testers with a heads-up that a character wipe will be included. Please note that, as with previous character wipes, this wipe will also affect gold, achievements, items, followers, and artisans. (Beta Bucks will be reset, as well.)
We're hoping to release Beta Patch 13 before the weekend, but we don't yet have a precise ETA. As always, we'll provide more information as it becomes available, and patch notes will be posted here once the patch is live.
Thanks for your continued feedback and testing! -- Source