Yes it will be interesting to see how advanced development tools are supposed to work in this new OS,
Some think the OS will not work and won't be used.
However, both Apple and Microsoft are very large organisations and this new 'store' concept that of course started with Apple is very appealing both to the end user and of course the OS manufacturer.
Where it leaves the hobbyist programmer or small independent developer is another question entirely.
This is the big plus for Windows 8. Hope for a unified place to find applications and hopefully a consistent seamless experience installing and using applications.