AMD's new Fusion APUs and Intel's fresh Sandybridge CPUs gunning for core territory, but Sony's not pickin' sides when it comes to its new seriously mobile VAIOs. Kicking it off on the lower end is the 11.6-inch, 3.2-pound VAIO YB Series, which is being refreshed with AMD's Brazos E350 APU. Sony doesn't consider the YB to be a netbook -- in fact, it doesn't plan to continue with its netbook line after this quarter -- but like most of these other Fusion systems (see: HP dm1 and Acer AO 522) the Y promises long battery life along with really solid graphics. Actually, according to the product manager, the platform has been out performing Intel's Pentium processors. The system will be available with Windows 7 Home Premium, 320GB or 500GB hard drives, and 4GB of RAM -- as you would expect, the $549 base configuration only gets 2GB of RAM and 320GB of storage. The Intel-powered YA Series will still be available with a Core i5 processor option for close to $750. (Note: We got some hands-on time with the YB Series before it was released, check out the hands-on here.) So, what does Sony have in store on the more powerful ultraportable end? The 13.3-inch VAIO S series is a four-pound Core i3-powered ultraportable clad in a durable magnesium casing. It doesn't seem to be configurable with discrete graphics, but it will have WiDi. That enough for ya? Hit the break for the press releases if you're looking for more.