Google Operating System has a great post about a new layout to iGoogle, the customizable Google portal:
The new version of iGoogle, currently available for a small number of randomly-selected users and for developers, will bring together all the Google services in a single fluid interface. At some point, iGoogle was a part of an initiative called Fusion that allowed users to combine content from across the web. The next major iteration of iGoogle goes further and it lets you actually access the full content, monitor the updates and share them with your friends.
I followed the instructions at the end of that post to use the new interface, and I love the new look!