Windows 8 build 8102.101 is the official Developer Preview and Milestone 3 build of Windows 8. It was released to application developers on 13 September 2011, specifically during the first edition of the Microsoft Build conference in Anaheim, California,[1][2] held between 13 and 16 September. A version of the build, which ran on a prototype x86-based Samsung tablet PC, was also distributed to event attendees.