Back in September, Google began testing a new iGoogle design and now it seems more are seeing that test.
Here is one of the many screen shots:
As you can see, the new iGoogle is less colorful, and more the new bland white dull feeling of the new Google look throughout the various properties.
One of the users who is now seeing it said, "center the search bar at the top of the page! and why have a collapsible left nav, if all it does is hide 'chat' which no one uses anyway?" Clearly, they are not happy with it, but the ones that do post about this stuff normally are upset about something.
Forum discussion at Google Web Search Help.