Microsoft went public today, talking about Windows Blue. The upgrade to Windows 8, code-named Windows Blue, is expected to be offered later this year. Microsoft announced the upcoming Build 2013 conference that will be held June 26 – 28 at the Moscone Center in San Francisco. The first 500 “early bird” registrants can expect to dish out $1,595, and the full cost of $2,095 will be for everyone else. Microsoft previously dropped prices to allegedly boost Windows 8 sales, but it could also be to clear the way for “new-and-improved” Windows 9.”]