All of the new features, enhancements and bug fixes are here. All of the Android 4.2 features are represented like multi-users, quick settings and lock-screen widgets. We've said quite a few times, to the point of ad nauseum, that ASUS is one of the best manufacturer's when it comes to updating its devices, so if you did miss the OTA update, consider this your lifeline to Android 4.2 for your ASUS Transformer Pad TF300. Simply click on the sourcelink.
source: ASUS via AndroidAuthority