Apple has just released a second beta for testing



From MacRumors:

The beta 2 appears as build 11A4400f, up from the previous 11a4372q.

iOS 7 is scheduled for release in the fall of this year, undoubtedly alongside new iOS hardware. Apple's iPhone, iPad, and iPad mini will all be due for updates in the latter portion of this year, and if past history is any indication iOS 7 should be made available to the public just a few days before the launch of the next-generation iPhone.

  Apple Seeds iOS 7 Beta 2 to Developers