Windows RT is (at least officially) supposed to prohibit sideloading, and have the Microsoft Store as the only app source. Basically, MS is following in the footsteps of Apple.
Windows RT also won’t be able to run desktop apps, only Metro(sexual? what a horrible brandname) apps. Desktop apps will be available via apps running on a remote server, but you can do that now via Remote Desktop on any decent mobile device. Yippie-kai-yay.
I want a tablet with:
* full access to the OS/UNIX shell
* ability to run existing desktop apps
* ability to run mobile-only apps as well
Oh, and whoever designed the Metro interface needs a kick in the yarbles. Windows 3.1 all over again, except uglier.