The Surface with Windows RT has already received a batch of updates and we’ve heard Microsoft confirm more or less that there will be support until 2017. On that note the Patch Tuesday continues with 11 updates available in Windows Update; these address security issues and update the operating system itself alongside Office 2013 RT.
A Microsoft support forum post details some of the improvements Surface with Windows RT owners will benefit from, especially the increased Wi-Fi reliability, improved connectivity and performance improvements. Those access points which are named in a way that implies non-standard-ASCII characters in their SSIDs will be supported (ñ, ö, ü, á, é). Also, the “Limited” WiFi connectivity scenarios will hopefully be reduced. One other fix is referring to daylight saving time: the correct time zone will be selected.