Following the release of the first beta for Mac OS X 10.9.1 being released to developers in the middle of November, Apple has issued a pre-release of Mavericks to developers.

The new OS X 10.9.1 Beta is labelled build 13B40 and was posted on December 3rd 2013 which seems to focus on Apple Mail, Safari, VoiceOver, and graphics drivers.

OS-X-10.9.1-540x162

According to the changelog for the new OS X 10.9.1 Beta, the update contains the following:

  • Improved support for Gmail pinnacle OS X mail, and fixes for users with custom Gmail settings
  • Improves the reliability of Smart Mailboxes and search in Mail
  • Fixes an issue that prevented contact groups from working properly in Mail
  • Resolves an issue that prevented VoiceOver from speaking sentences that contain emoji
  • Updates Shared Links periodically when open in the Safari Sidebar

Registered Mac OS X developers can head over to the Dev Center to find the download link in order to install the new OS X 10.9.1 Beta.

If we’ve left out anything that differs on this new Beta than the old, please drop us a comment in the section below.