I have bought an Surface Windwos RT, but it comes with limited control right and only allows me to install app from store. If the windows 8 pro is released, I want to update software to Windows 8 Pro. Can I upgrade my windows rt tablet to windows 8 pro?
No, you can’t. Windows RT tablet includes the ARM processor, this design of hardware makes it impossible to run Windwos 8 pro version. So the best way is to buy a new Surface Pro.