I opted in for the Apple MacBook Air because I wanted something with super long battery life and super lightweight. Now the Apple MacBook Pro with Retina Display has these features along with a powerhouse of specs under the chassis. The new retina display, performance, and long battery life in this little form factor just kills every other portable laptop system on the market. I'm sold.
I just called in to a local store, they don't have it in stock yet. They are available to purchase on the Apple.com website, but if you're like most people who ummm want to 'defer' a hundred dollars of sales tax (and file it at the end of the year), you can also find a few options for pre-order on websites like B&H.
Here's some additional links to the pre-orders.