It looks like HTC HD7 owners living in Germany have started to receive the Windows Phone Tango update on their devices.
The folks over at WMPoweruser
have just been tipped on the availability of the update. For the time being, there are no other reports coming from other countries, but Microsoft is likely to make it available in other regions as well.
Windows Phone Tango
(OS version 7.10.8112.7) brings lots of new messaging capabilities, such as the option to attach multiple pictures, videos, audio notes and ringtones to text messages.
In addition, the update adds new SIM-related features, including the possibility to export phone contacts to a SIM card or choose to import which contacts from the SIM card to be imported on the phone. Other performance enhancements have been included as well.