Good news for those of you on T-Mobile US with their exclusive Lumia 810 Windows Phone 8 device, starting today at 10AM PST/1PM EST, users can begin to get OS and firmware updates for their phones.
From WPCentral:
T-Mobile Lumia 810 now getting Portico Windows Phone Update
This follows a few weeks after T-Mobile rolled out a similar update for their HTC 8X lineup. The update will bump the OS to version 10211 aka 'Portico' and the firmware to 1249. The OS update from Microsoft includes new features such as persistent Wi-Fi, Wi-Fi hotspot detection, SMS call reject, some Internet Explorer enhancements and other general OS improvements. The firmware from Nokia should include some tweaks to device performance, including auto brightness adjustments, sensitivity and other system settings.
T-Mobile Lumia 810 now getting Portico Windows Phone Update