I was expecting following minor but important changes.
http://awesomescreenshot.com/09e4ko3od1
1) The cart details black box with blue color "checkout" link is not looking good. Checkout box should be always display on right side this trend followed globally by mostly all e-com sites.
2) clickable White arrow to display cart items can not be identify by customer. Hundreds of my customer is asking me how to see cart.php before checkout ! Remember customers are not that much tech savvy. We should always display clear hyper link.
I hope you will able to implement in final version.