This morning I logged into Google Analytics and noticed a message mentioning a brand new interface, and yet, everything looked the same. Now, a couple of hours later, I just logged back in and, indeed, noticed a massive revamp for Google Analytics.
The first thing I notice is the much larger font and colorful design which looks almost kiddy-like. Something else to note is it's nearly all Flash-based now. However, I do have to admit, the default information provided on the front page is much more useful.
Overall, I think the information is presented more concisely, albeit with larger font and more whitespace, but it will definitely take some getting used to, and I don't believe any new information is available. (However, extra calculations are done for you so there is less number crunching to do on your end.) I could do with or without the change, although I appreciate the fresh look.