Nokia is still very active in sending out updates for its Lumia Windows Phone devices. There is an another update coming to Nokia Lumia 710 devices which includes Windows Phone Mango Refresh (Tango) changes such as enhanced MMS capabilities, etc,. Also Nokia has added Internet sharing features in the upcoming update.
Along with the above changes, Nokia News app and Nokia Creative Studio apps comes pre-installed on this version of the OS. wp7.nl noted that the firmware version will be 1600.3030.8773.1212 and the OS version will be 7.10.8773.98. The update is already available in Nokia servers and it may be released to devices as updates soon.
I think the same update will come for Nokia Lumia 800 also. We have asked Nokia about this update and will update you all when we hear back. Nokia Lumia owners will be happy to hear this news!