The Verge has a decent summary article.

- New 13" and 15" MacBook Pros. Retina displays. Fast guts. Long battery life. Reasonable prices (at least on the 13" model).

- Mac Pro, coming in December, starting at $3000. (No word of a 4K display, presumably that's also TBA in December.)

- iPad Air. It's thin. $499+

- iPad Mini. It's higher resolution. $399+

- OS X Mavericks. It's a free download for everybody. Today. Also, new Macs come with free iLife and iWork.