Because it's built on Eclipse, this move doesn't come as a total surprise, but if I'm not mistaken, this would be Adobe's first product for the new Intel Macs. Details are VERY sketchy. As the blog notes there is no timeframe for release and I'm not even sure they will be released at the same time, though I would think so. While supporting the Mac has always been in the cards, I would love to see Adobe release Flex Builder for Linux. Having the IDE built on Eclipse means that it should, in theory, be easier to port over to Linux than say, Photoshop. It would do a lot of good for the entire RIA world if Linux users had a powerful tool at their disposal. As I've noted many times, there are a lot of smart folks using Linux who could build some amazing RIAs.