Just popped up on mine this afternoon. Seems a little slow yet, and judging by the fan noise it's somewhat more demanding than the plain old browser interface.
As to the interface itself, meh. It doesn't do anything for me that the old one didn't; I liked the "browser is the interface" idea.
i5-2500K@4.3|Asus P8P67-LE|8GB DDR3-1600|Powercolor R7850 2G|SanDisk Ultra II 480GB|1988 Model M|Saitek X-45|Logitech MX 518 & F310|Dell 2209WA|Sennheiser PC151|Asus Xonar DX