If you've used a previous release, but could not bear the slow performance, Try it again. Importing is much faster, still could be better, but at-least it will finish in one sitting. Also the previews are about twice as fast on my imac g5. My main gripe is that it needs to be faster when making changes in "development" bridge is still much more efficient. also the changers to the interface are better. but still not there. They added some neat interface stuff too, like on the curves graph when you roll over the curve the graph shows what tonal values will be affected. It's miner but could be useful for beginners. Still needs a lot of work but it's getting much more usable. I Might start using it now along with Bridge.