There's a whole bunch of new stuff in Google Docs, including real-time editing, a drawing tool, and a new look and features for spreadsheets and presentations. Not all of it is apparent and visible to returning Docs users, though.
Google Operating System's app-by-app rundown shows how to enable the new document editing in the Settings, to activate Drawing from the "Create New" button, and hit the menu bar for a crisper spreadsheet view. If you've had some time to play with the new Docs tools, tell us what you think of them in the comments. [Google Operating System]