Right around 20 days after iOS 6 beta 3 was beamed out to developers, beta 4 is now making its way into those same hands via an OTA download. We've just confirmed that the files are indeed being pushed out, with the changelog showing fixes related to Facebook integration, the Address Book, authorization statues, and Apple TV / Bonjour workflows. You'll also get a patched-up Dictionary, iTunes and Maps, amongst other things. The entire list of updates is embedded after the break, but we'd recommend a stiff cup of coffee before trying to digest 'em all.
Update: For the eagle-eyed, yes, this update does indeed remove the YouTube app from the iOS homescreen. If you're out of the loop, Google owns YouTube. And Apple hasn't shied away from doing its best to distance iOS from Googlefied apps...
http://www.engadget.com/2012/08/06/a...ers-changelog/