updated 11:32 am EDT, Thu June 26, 2014
Could be connected to major glitches in beta 2
The release of iOS 8 beta 3 won't happen until July 8, sources say. Beta 2 was seeded to developers on the 17th, about two and a half weeks after the first beta emerged from WWDC. A July 8 update would come a full three weeks after its predecessor.
The delay may be linked to significant bugs in beta 2. Users have been complaining about freezes, poor battery life, and cellular networking issues, all of which Apple may want to address in beta 3 to give developers a more stable testbed. The finished OS is due to arrive this fall, most likely in September, alongside new iPhones.