We've already hinted that the name of the game for laptops at CES will likely be incremental updates, and the latest company to prove our point is Sony. The PC division just announced an optional touchscreen for its VAIO T Series 14 Ultrabook, which originally debuted back in October. The touch T14 will be available for $800 in the spring. In addition to updating the T Series 14, Sony is releasing the T Series 15, which boasts a full HD touch display and will go for $950 when it hits the market this spring. Why no specs, you ask? Well, the co
