Back in November 2008, we reported Google was testing a new AdWords interface. It seems like we are getting more reports from blogs and WebmasterWorld that more advertisers are now able to see this new interface.
It is an opt in feature, where Google is asking some of their advertisers if they would like to participate in the new interface.
Tim Cohn posted some additional screen captures at his blog, taking you through some of the new features and sleeker designs and reports.
Forum discussion at WebmasterWorld.