Re: Windows RT development
As far as I know Nokia has no Windows 8 / RT product so far, neither has it announced anything in this topic. Of course there is always a chance that someone discussing Windows Phone questions here is also involved in desktop/tablet Windows 8 development, but do not expect too much from that.
And moderators (including me) delete off-topic questions on a regular basis, but of course, without seeing it can not be decided if your question is totally off-topic or not. For example you mention the UI layer, which is very similar on Windows Phone too, so a UI design discussion can be interesting.
Personal suggestion: if you put effort into carefully crafting a question, make sure to keep a copy for yourself, so it can be re-used if necessary. Otherwise you may become really upset if the question has to be removed.
Re: Windows RT development
These forums are focused on Nokia Devices and Programming for whose devices. Until Nokia has a Windows RT device, if ever, I don't think this is the proper place. Have you tried MSDN forums?
Re: Windows RT development
Do you want to have information about Windows 8 development or WinRT API for Windows Phone 8?