The new look Gmail is now available to all. You can switch to the new look by clicking on Switch to the new look in the bottom-right of Gmail.
In a November 1, blog post Jason Cornwell, User Experience Designer, gave an in-depth look at the new design.
Conversation view has been completely redesigned to help you read through your email threads. You'll now see profiles pictures for your contacts, so it's easier to keep track of who said what.
For those using Gmail on variety of devices, the spacing between elements on the screen will automatically change based on the kind of display you're using. If you prefer a denser view all the time, you can change your density manually in the Settings menu.
New HD themes
Themes have been completely rebuilt to enable us to bring you a new set of beautiful high resolution themes with imagery provided by iStockphoto. Just, go to the Settings menu to take another look at themes and choose the one that fits you best.
"The navigation panel on the left keeps your labels and chat contacts in view at all times. It's also more customizable: you can resize the labels and chat areas if you want to see more, or hide the chat area entirely via the chat icon in the lower left. You can also use the arrow keys to navigate around the interface," said Cornwell.
Clicking the dropdown in the search box, get you a new advanced search panel, which makes it easier and faster to find exactly what you're looking for. You can use the same panel to create a filter from any search in just a few clicks.
Watch the video demo of the new look Gmail: