The Asus Transformer Pad TF300 has started updating to a fresh off the factory build of Android 4.2.2 in the US. The update will be available in other parts of the world by the end of March. Apart from bringing the latest Jelly Bean goodness to your tablet, the update has performance and stability enhancements, undetailed new functionalities and user profile support.
The next to get Android 4.2.2 will be the Transformer Pad Infinity, and unnanounced other devices. This is scheduled for Q2 2013.
Oh, and apparently the Asus Transformer Pad will go down in history as the first ever non-Nexus device to get the latest version of Android. Good job, ASUS!