[Ennis]

I would venture a guess that this is to make more accessible the Android platform to existing ActionScript developers. I can't imagine many Android devs would pay thousands to buy and learn Adobe tools when they can build the same software with the tools they know.

[tomlin]

Or not pay thousands and just compile for free using a handful of OS tools that work just as good, perhaps even better. (ie: http://www.adobe.com/products/flex/)

[SwaroopH]

I don't think Adobe's Builder [tool] is free?

[SingAlong]

No the flex builder isn't free. But the flex sdk is opensource

[tomlin]

Flex SDK is open source. You can find it on that page.