Not yet,they're all pretty much the same and with low res screens. well I dont class 1366x768 as high res, but they all do
The only real difference I've seen so far is the Asus RT has opted for terra 3 quad rather than dual.
I so hope someone comes out with something better, I've been very disappointed with the specs so far, well just the screens really.
I'll possibly make a thread in a bit.
I'd be interested in a W8 Tablet thread, as the only one I've seen any specs on is the MS Surface.