Apple said to be readying OS X Yosemite public beta

Apple is planning to release a publicly available beta of the upcoming OS X Yosemite later this month, according to sources briefed on the plans. This release will mark the first time Apple has released a public beta of a new OS X version in over a decade.

Apple released a Developer Preview of Yosemite following the software’s announcement at the June Worldwide Developers Conference, and the company has continued to release updates every two to three weeks since that time. Apple previously said that it will release a public beta of Yosemite this summer
 
Apple is also planning to release the fourth preview for registered developers later today, the sources said. Of course, these plans are fluid and the release could be pushed back to a later date. It is possible that a new iOS 8 beta will also arrive today for developers. (Update: Yosemite Preview 4 and iOS 8 beta 4 have each been released).