Google has finally released an update for its AdMob advertising SDK for iOS developers that leaves those reliant on it just three weeks to update affected apps before Apple's hard deadline for rejecting apps that still use Unique Device Identification (UDIDs) to track app usage and advertising effectiveness. The new version, 6.4.0, retires the UDID scheme (which had emerged as a potential security and privacy risk that could compromise personal information) and adds support for test ads, along with some bug fixes.
