The Diablo III Beta Patch 10 won't hit beta servers this weekend as planned due to unforeseen bugs that might affect the login system. The developers plan to launch beta patch 10 by Monday, January 23rd unless further issues arise.
Quick update for everyone! We've discovered a few issues with Beta Patch 10 which could affect player login. Instead of releasing the patch as-is and addressing those issues later, we felt it necessary to take some time to resolve them now. As a result, the soonest we'll be able to release Beta Patch 10 is next Monday, January 23.
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, items, followers, and artisans.
We're hoping to release beta patch 10 before the weekend (potentially as soon as tomorrow evening), but we don't yet have a precise ETA. We'll provide more information as it becomes available, and patch notes will be posted once the patch is live.
Thanks for your continued feedback and testing! -- source