JD88 :
This is exactly what I've been saying they should do since the launch of the first Surface RT.
No it isn't. THIS is what you've been saying.
JD88 :
Windows Phone OS (ARM) for Tablets under 9" and full x86 for everything bigger
Artificial device size restrictions have NOTHING to do with a unified store, a merged ARM OS, or unified APIs. What if I want an 8" ULP x86 device? What if in the future ARM devices run all the apps I want (realistically they're almost there now if you don't need legacy support)? You could get a 10"+ ARM-based tablet for cheaper and with better better life, for instance.
With a unified store, and soon unified APIs, more and more apps will be available on both ARM and x86 through the new store. They're trying to UNITE the architectures, so everything runs on both. What you're suggesting they do is divide them, and put artificial limitations on which runs on what.