While the Windows 8.1 update is now available to users, Microsoft is already working on the next major desktop OS release, which could be ready by the end of the year, a Redditor said. However, he deleted his account since hosting an extensive ask-me-anything session on Reddit about Windows Phone 8.1 and upcoming Microsoft plans. Without revealing his identity, he did say he is a 15-year veteran Microsoft employee who’s working inside the operating systems group, with a moderator confirming it during the extensive chat. “Windows (Windows Server, Windows Phone, Xbox, (unnamed thingy)) are going to take drops from our next release ‘Threshold’ which will be out like in October-December,” he said on Reddit. “The WinPhone team has had their