The Tango update which brings Internet sharing, Flip To silence and media streaming is scheduled to release on June 27. This Tango OS comes default with Nokia Lumia 900 and Lumia 610.
This latest version of the Lumia software brings three long-awaited experiences to your Lumia 710 or 800: the introduction of Internet sharing, Flip-to-Silence and media streaming from your phone.
This software update will be available via Zune . This update is a global roll out and it may take a day or two to reach your region.