Clearly every Google app has been updated to be more fitting of ICS. Today Google did the exact same thing to it's Google Plus app. Also taking a page from the new "Google Look". Everything seems to be a bit more modern and more eye catching. This is great as far as native apps to follow a more cohesive design to better the experience and make it more persistent throughout the OS. I hope to see Maps, Reader and any new app follow the same design pattern.

As far as the app. Google Plus is still awesome yet it still feels a bit out of place. Once you get over a certain amount of people in your circles you tend to loose tracks and it can become a less personal experience if you do not work at it. That being said the more time that you spend on the + the more you will love it and the more relationships you will have.