Can I switch between iOS 5 & 6 (and possibly Android/Windows 8) on my iPad? On my iPad 3 (The New iPad), is it possible to switch between different versions of iOS (iOS 5 &amp; iOS 6)? If so, how?

Would also be possible to install Android and or Windows 8 on iPad? 
(I know for older versions of iPhone there is iphodroid and Bootlace, but these don't work on the iPad 3. There are also services that let you run Windows 8 on a computer and access it from iPad, but that is not the same as installing Windows 8 on iPad).

I don't mind if the answer involves jailbreaking.
None of what you want is possible. And it never will be possible until suddenly Apple and Microsoft get married and the marriage is watched on live television by more than 50 million people worldwide.