Actually this thread is old news
I have known this for over 6 months (Wish I could find the link)
John you wrote, together with my reply
Now that low power x86 cpu's from Intel will be available in mobile platform things will change in 2015 and beyond. No more writing for ARM and X86 bogging things down in future.
So that means RT is on the way out?
I remember this post. At the time the word was MS was going to have one OS for all platforms but it seems after all it will have two. One for x86 and one for ARM. The difference being that there is currently two ARM versions, one for phone and one for tablet. With 10 one ARM version will cover both.