iOS 8 GM does not update constraints on collection views

Question

In Xcode 6 Beta 7 and all versions before it, I had a collection view that would update its constraints on its cells when an iPad would rotate between landscape and portrait. No

Answer 1

in my UICollectionViewCell class I added

override func layoutSubviews() {
    contentView.frame = bounds
    super.layoutSubviews()
}

and I used this code to refresh

dispatch_async(dispatch_get_main_queue(), { () -> Void in
    // in this case vController is UICollectionView
    self.vController.reloadData()
    self.vController.layoutSubviews()
})