As has been rumored since the (partial) return of Apple’s dev. center, iOS 7 beta 4 is expected today at 10 AM PST. Many non reputable blogs have been saying that Apple will scrap beta 4 and jump to beta 5. if this were true then that would mean, if Apple is truly maintaining a bi-weekly beta release, that we won’t see beta 5 until next Monday. Of course this page will be updated when the next beta of iOS 7 is released.
UPDATE: iOS 7 Beta 4 is now live via OTA and the developer center!