It is better documented here, and seems something to start thinking about:

http://arstechnica.com/information-technology/2012/05/no-cost-desktop-software-development-is-dead-on-windows-8/

This isn't actually better documentation, since it talks about the future,
without being "official" (i.e. it's Peter Bright's opinion, not a Microsoft
announcement).

I hereby predict that Microsoft will revert this decision, and that VS Express
11 will be able to build CPython.