Apple has just released a new beta version of OS X 10.7.2 to developers. This version is build 11C55 and is a new version of the Lion update that supports iCloud features. It is being provided for developers in order to allow them to test iCloud features like integration with iOS devices and iWork apps as well as their own third-party apps.

This update also appears to roll the iCloud beta package into the OS X Lion update, as a separate download for iCloud beta is no longer available.

Screen shot 2011 09 11 at 1.51.14 PM 520x192 Apple releases OS X Lion 10.7.2 with iCloud beta build 11C55 to developers

The last update to OS X Lion and iCloud for Mac came on the second, although that release also included an iPhoto update, while this one does not. This update provided solely for the purpose of testing iCloud features and is not an official update build. If you’ve installed any previous versions of 10.7.2, you have to revert back to 10.7 using the supplied tool before you update.

iCloud for Lion will integrate with the various features of iCloud.com including Find My iPhone, Mail, Calendars and iWork. iOS 5 is the next major revision to Apple’s software for iPhone, iPod, Apple TV and iPad devices. The new OS is slated for release in the fall of this year. You can see our complete rundown of the iOS announcements at WWDC here. We’ve also got a closer look at some of the features of iOS like iMessagesTwitterSetup and Notification CenteriCloud and alerts.