We've been waiting and waiting, teased and waiting some more, but it's finally here. Gabe Aul just tweeted that Windows 10 Mobile build 10549 is now available for Fast Ring Insiders, so go now and check for updates:
Hey #WindowsInsiders, we have a new build for Mobile going live now - 10549.
— Gabriel Aul (@GabeAul) October 14, 2015
We'll have more on the details coming right up, but for now, get to downloading!