Bring it on finally, Apple as of May 1st will no longer accept any apps that will use the Universal Device Identifier Device (UDIDs) or those which are not compatible with Apple’s iPhone 5 display or both of either. Here is what Apple said about it:
Starting May 1, the App Store will no longer accept new apps or app updates that access UDIDs. Please update your apps and servers to associate users with the Vendor or Advertising identifiers introduced in iOS 6.
Starting May 1, new apps and app updates submitted to the App Store must be built for iOS devices with Retina display and iPhone apps must also support the 4-inch display on iPhone 5.