At a private event for press and analysts today, Microsoft revealed more details about its Windows 10 launch plans.
Today's  announcement, held in conjunction with the Build developers' conference  in San Francisco, didn't include an actual date. Microsoft execs  continue to commit only to a launch "this summer." If the report from an  overly talkative hardware partner is accurate, though, that milestone will be in late July.Joe  Belfiore, Corporate Vice President of Microsoft's Operating Systems  Group, confirmed what most Microsoft watchers had previously suspected:  The summer launch will be only for the client version of Windows 10, on  x86-based PCs and tablets. The Windows 10 releases for phones, small  tablets, Xbox, and Hololens will follow at unspecified later dates,  probably this year.
In earlier Windows development cycles, this  summer's lunch event would have been labeled Release to Manufacturing,  or RTM. In the new Microsoft, that phrase is outdated. Instead, what  happens at launch is that the final, ready-for-the-general-public build  of Windows 10 will be declared the Current Branch. At that point it will  be available via update, for free, to any existing devices running  Windows 7 Service Pack 1 or Windows 8.1.
Belfiore also confirmed  that the Windows Insider program will continue after the launch event.  Registered members of the Insider program who've been testing preview  releases will be offered the option to switch to the Current Branch or  remain in the preview program.
Those who choose to remain on what  Microsoft is calling the "active branch" will continue to get new  updates ahead of the public, with those updates making their way to the  Current Branch when they're deemed stable enough for release.