Lenovo have just launched a Miix 2 11 based on 4th-Gen Core with up to 256GB of SSD storage and optional 3G.
Like the Lenovo Miix 2 10 it’s a 3-mode detachable and it’s obviously going to compete in the Surface Pro 2 space although you’ll have to wait for April. The starting price of $699 looks good although you should probably expect a Y-series Core i3 for that price, like the $699 Yoga 11S.