HTC Mozart updated to Windows Phone Tango aka WP7.5 refresh (Updated)

It seems that the much-discussed update to Windows Phone Tango is being released at this very hour, to report it is Aviraj Ajgekar, Technology Evangelist for Microsoft writing on his  technet blog that his unlocked HTC Mozart  received an update that upgraded his HTC Mozart to  software version 7.10.8779.8.

You acknowledge that you have received as many as 3 consecutive updates to bring your own device, the shift has seen these different versions, build 8112.7 -> 8773.98 -> 8779.8.Despite this, the download time of several updates is quite low, probably because Windows Phone Tango does not offer a significant number of new features.,mostly some fixes and updates to the OS (mostly around enhancing MMS).

Update: Aviraj has deleted the post from his blog and no one else is reportedly getting this update. Is yet another Microsoft employee being misinformed or was this an internal update for testing?

Source Aviraj Ajgekars's blog