A few things you should note about yesterday's Xcode beta release
First, new sizes and naming updates apply to asset catalogs. Here's my latest list of what I believe you need to be building on a per-app basis for icons. No, none of this is documented anywhere. I also believe there were no changes to launch images.
AppIcon40x40@2x~ipad.png
AppIcon40x40~ipad.png
AppIcon29x29@2x.png
AppIcon60x60@2x.png
AppIcon29x29@2x~ipad.png
AppIcon76x76@2x~ipad.png
AppIcon29x29~ipad.png
AppIcon76x76~ipad.png
AppIcon40x40@2x.png
Second, pay special care to the beta API diffs -- especially anyone doing view controller layout. I just spent 4 hours updating a common pattern throughout several books of sample code.
Finally
