Apple on Monday seeded the second beta, (build 14B23) of OS X 10.10.1 to developers, coming one week after the first OS X 10.10.1 beta seed, build 14B17. OS X Yosemite 10.10.0 was released to the public in October.
The beta is available to developers via the “Update” tab in the Mac App Store, and is also available for download in the Mac Developer Center.
Apple is asking developers to focus their testing on Wi-Fi, Exchange accounts in Mail, and the Notification Center.