updated 08:10 pm EST, Thu January 23, 2014
New Mavericks update focuses on Mail, Safari on tabbed browsing
Amidst a slew of other updates, Apple has also issued a new beta version of OS X 10.9.2 Mavericks alongside a new beta of Safari 6.1.2. This third revision of Apple's new OS is build 13C44, and MacNN has learned that it is likely nowhere near a final, bug-free public release.
Apple has asked for feedback on Mail on the Mavericks update. The new Safari 6.1.2 beta is compatible with Lion and up, and asks developers examine accessibility, autofill, dragging tabs between monitors, general website compatibility, printing and emailing from Reader, and extension compatibility.