A leaked internal T-Mobile USA memo shows that carrier is preparing to start the Windows Phone 7.5 Refresh update, aka Tango, for the Nokia Lumia 710 today. Microsoft again is set to start their Windows Phone Summit today, so the timing fits perfectly. The rollout will begin today, continuing through July 31.
Changes as marked by the internal T-Mobile memo:
Enables tethering hotspot
Resolved keyboard disappearing
Resolved unlock screen getting stuck
Improvements to uplink speed
Improvements to camera quality
Improvements to proximity sensor
Improvements to software stability
Just a few more hours for the Windows Phone Summit to start! Stay tuned for more!