Google has covered most of the highlights here.
The Nexus 7 is more of a competitor to the Kindle Fire, than the iPad. Google will continue to push their tablet offerings against the iPad, but it is clear that entertainment is the primary focus for the company. To emphasize that, the Nexus Q seems to serve as a great companion to Play and 7.
One other thing not covered is the epic Google Glass demo, which definitely has people buzzing about technology. Clearly, Google is trying to reaffirm their position as the company in tech to watch.