September 22, 2010, was leaked to BetaArchive, an online beta community, and to P2P/torrent sharing networks as well on April 12, 2011,  Milestone 1 includes a  ribbon  interface for Windows Explorer,  a  PDF  reader called Modern Reader, an updated  task manager  called Modern Task Manager, and native  ISO image  mounting. §  A 32-bit Milestone 2 build,