NEW CONTACTS FEATURE 1
You can add multiple email addresses by pasting a list into the Add to Group menu.
NEW CONTACTS FEATURE 2
You can also specify which email address is used in a given group.
For starters there is a new preview panel on the right sidebar, you can preview videos in the preview pane, its easier to view pictures/images, its simpler to explore and browse your files and more (read the entire post for more info on these features, visit Google Docs to explore, you can even take a guided tour in Google Docs that’s really informative, and there’s an Getting Started with Google Docs page, too).