Adobe Shadow is a new inspection and preview tool that allows mobile web developers and designers to work faster and more efficiently by streamlining the preview process, making it easier to create and optimize content for mobile devices. Shadow allows device pairing, synchronized browsing and refreshing in sync with your computer, and remote inspection and debugging so you can see HTML/CSS/JavaScript changes instantly on your device. Shadow is now on Adobe Labs, and the Shadow team is also blogging.
The upcoming version 4.6 of Data Services includes an HTML5 / JavaScript client SDK, and this post contains useful links to presentations on the subject.
Adobe's Bernd Paradies started a series of blog posts on FalconJS and Cross-compiling ActionScript to JavaScript, and has since been posting away on the subject.