, the new mash-up tool built on the new Microsoft Silverlight platform, will be released in public beta today.

Microsoft CEO Steve Ballmer is set to make the announcement later today in a key note address at the Web 2.0 conference in San Francisco.

Beet.TV was up in Redmond a few weeks back to interview one of Popfly’s key developers Dan Fernandez who gives us a cool demo.

You can grab the code of this interview right here.

— Andy Plesser