Apple has failed to make good on its promise to deploy its iTunes Match service by the “end of October.” A beta version of the service, which allows users to access their entire music library in iCloud from any iPhone, iPad, iPod touch or computer, originally became available in late August and it was first included in early builds of iTunes 10.5. The service was supported in the latest iTunes 10.5.1 developer build, too, but that version expired on Tuesday. It remains unclear when Apple will officially launch iTunes Match or what is causing the delay. iTunes Match typically wipes a developer’s library before a new version launches, and the last wipe occurred on Thursday. That suggests either a final build or a new developer build of iTunes 10.5 will be rolled out shortly.