I've had the original Lenovo Yoga convertible ultrabook for about a year - and it's fantastic. I'm currently using the 11" S with 8gB RAM + 256gB SSD that I bought for $799 (I upgraded the ram+ssd after purchase) - it's plenty powerful for me to do video editing, gaming, CAD, etc. all with 30-100 tabs open in Chrome. Not bad for something that's both extremely portable and also convertible (turns into a tablet).
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.