The 351MB update includes fixes to the email client, Google Security Patches, TouchWiz user interface updates, WiFi enhanced connectivity, DivX, Bluetooth 3.0 support, new apps and widgets like: AllShare, Memo, Pen memo, Photo Editor, My Files, Social Hub and World Clock, enhancements to Music Player and Video Player, support for additional security policies for Enterprise ActiveSync, and additional Enterprise Application Support.
The update should start rolling out within the next few days so keep a look out for it. As usual, backup your tablet before you attempt anything – you never know what could happen. And let us know how it goes for you when you do get this update.