Aperture 3.3 was announced today. It looks like they "improved" the highlights & shadows tool by removing some of the sliders. Fewer choices is better?
The really big change is that it requires Lion and will not be available for Snow Leopard. This means I have to upgrade my OS, never get another update, or go back to Lightroom. I don't like any of those choices.
Aperture certainly isn't the first program to require Lion to work, but it is the first one that I've cared about.

