Tips

Take a look at some obvious changes in the adjustment bricks:

The most obvious is the new Professional Auto Enhance button. This is the single most significant change to the way will start adjusting images. I can’t imagine very many situation where you wouldn’t want to start there, just to see what it does. If it looks good, move on! Next!

Brushable white balance opens a lot of creative possibilities.

 Source: http://www.apple.com/aperture/whats-new.html#library

First off, this doesn’t appear to be Aperture 4, but nonetheless is a significant update.

Optimized for Retina Display

This is great for the lucky ones that are going to buy a new MacBookPro. I’m not one fo those. I have a very new MBP that will have to last me for a few more years. Having said that, I’m very curious to see how photos look. I expect it will be magnificent.