Yes, the time has come. And yes, it is for real.
Microsoft just announced the immediate availability of Windows Phone SDK 7.1 Beta 2, as well as confirmation of early access to the Mango OS update (build 7661).
If you’re registered for Windows Phone Marketplace, you’ll receive an invitation from Microsoft Connect that will provide access to a firmware update for your retail Windows Phone device.
So now we wait. Connect invites are being sent already and every developer should get one (for one device only) in the next few hours. Go hit that ‘F5′ key!