As we reported a while back, Google had been testing a newish look on seemingly random web viewers (see here). it would appear that the new look has gone live now for all viewers of google.com. Notable revisions include a revised image search, changes to the "cached links" page, and style changes to search results. Google have also placed a link to Froogle on the front page, their catalogue search tool. Also, they have made a nicer page to find all the other Google searches (here).
Asides from mainly cosmetic changes, the only new features can be found at Google labs, the test bed for potential new features at Google. The first is something which "personalises" your search based around a profile you create on Google (see image here). The second is something similar to googlealerts.com, a tool which emails you when a new page is added on a certain search.