Apple Seeds First OS X Yosemite 10.10 Beta to Developers

OS X Yosemite logo

Apple has seeded the first beta version of OS X Yosemite 10.10 to developers of Mac Developer Program.

Apple unveiled OS X Yosemite at today’s WWDC 2014 Keynote address. It includes new features and improvements such as improved Notification Center, new iCloud Drive integration, Mail Drop and lots more.

The build number of OS X Yosemite beta is 14A238x. The OS X Yosemite beta is available via Software Update in the Mac App Store, and also in the Mac Dev Center.

OS X 10.10 Developer preview supports the following Macs:

  • iMac (Mid 2007 or newer)
  • MacBook Air (Late 2008 or newer)
  • MacBook (Late 2008 Aluminum, or Early 2009 or newer)
  • Mac mini (Early 2009 or newer)
  • MacBook Pro (Mid/Late 2007 or newer)
  • Mac Pro (Early 2008 or newer)
  • Xserve (Early 2009)

If you find anything new that wasn’t mentioned during the Keynote then please send us an email to

We expect OS X Yosemite beta to reveal tons of features, which Apple didn’t showcase at today’s event, so stay tuned here at iPhone Hacks or join our Facebook Fan page or follow us on Twitter or add us to your circles on Google+ or subscribe to our RSS feed.