Today at PyCon, Jim Hugunin announced the availability of IronPython 0.7 which you can download from this site. We are releasing the code under a BSD style Shared Source license. This version runs on the Whidbey CLR (V2.0) which has features like LCG designed for dynamic languages as well as numerous performance improvements. Because IronPython targets the CLR, 0.7 also works directly with other new managed technologies like Avalon and Indigo (also recently release for usage, see the the March CTP).
I want to congratulate Jim for getting this release up on the site and ready for use! We're looking forward to hearing your feedback. I'd love to hear about the cool apps you write. Let us hear from you!