Air View: With the S Pen, users can quickly preview content without having to open it. Users can preview video while scrubbing, preview e-mail attachments without opening, and preview photos without opening the album.
Quick Command: With Quick Command, you can quickly activate applications and services that are used most often, by writing command shortcuts using customized and preset S Pen strokes.
Enhanced Handwriting: Users can send personalized handwritten notes and memos via e-mail, as well as hand-write directly in the S Planner.
Enhanced S Note: S Note now features additional ready-to-use templates; allows users to add effects to their digital content with Idea Sketch; and enables the insertion of video directly into not only Note templates but also other templates. Users can also launch S Note directly from the home screen for added convenience.
Easy Clip: Allows users to select and clip content to save, paste, or share in seconds.
Photo Note: Add personalized handwritten notes on the back of your photos.
Paper Artist: Users can enliven sketches or content with different color or pencil styles, and Paper Artist also has over 30 artistic effects that can be applied to images or media. Users can also draw or write onto the content and share it with others.
A smarter S Pen: The S Pen now allows users to select writing or color modes at the touch of a button, or unlock the home screen simply by removing the S Pen.
Admittedly, it's been a few months since I've used the Note 10.1, so I can't actually speak to how useful (or dramatic) these changes are. However, if there are any Galaxy Note 10.1 owners out there willing to share, I'd love to get your impressions in the comments.
Corrected, 9:45 a.m. PT: The Tab models being updated are in the Tab 2 series.