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The Yoga 2 Pro increases the screen resolution to a whopping 3200x1800 'QHD+', which, frankly, might be too good... but add in the backlit keyboard (which I can't believe was left out in the first place), new tapered design, lighter weight, 4th gen (haswell) cpu, 350 nit IPS screen, and a comparatively (to other machines with similar specs) low price of $999 and it's definitely a worthy upgrade to whatever you're using now.
The thing isn't supposed to be released until October 18th, primarily because it ships with Windows 8.1, but BestBuy's website lists it as available and shipping- and has another, identical listing that says coming soon. Here's the working link.
UPDATE - It seems that in the time it took me to write this post it's no longer available to ship directly to your house, but still shows that ship-to-store is available.