As I tweeted today, I noticed something wrong with the Google landing page I was getting: the advanced search link mistakenly links back to www.google.com, not the advanced search page. Thinking it through, I thought this might be due to flighting a new UI.
This UI is similar to that which Tom Krazil spotted back in November, but different in colouring. Going via an anonymous proxy, I get the normal fit and finish.
Update: note also that the web options (the left rail facets) are now their by default, whereas in the standard UI, they are collapsed and require expansion by the user.
In addition, the actual landing page has a different design for its buttons and the shadow on the main Google logo has all but gone.