Last night my Surface received at batch of updates from Microsoft. There is a Firmware update for the Surface and four other updates for Windows RT. The is no information on what the Firmware update contains, but I did hear and interesting rumour that I will try and find some more info about.
The Windows RT updates include:
An update is available for Microsoft files that contain a digital signature in Windows 8 and Windows Server 2012
I have read that performance has been improved this with the update but I can’t really tell any difference at the moment.