Though Nokia has officially given a date of 27th June for “Tango” update to roll-out for Lumia 710 and 800, but according to some reports “Tango” update is already rolling out for Lumia 710 on Rogers.
One reader of WPcentral has informed that plugging in his Lumia 710 to his Zune Desktop, prompted him to update his device. No changelog is known yet but if it is Tango then you can read more details in our earlier articles.