On the 20th anniversary of the ThinkPad line of laptops, China-based computer maker Lenovo has officially unveiled two new Ultrabooks alongside a tablet designed for the upcoming Windows 8 operating system. One of the new laptops, the 14-inch ThinkPad X1 Carbon, was reviewed in full by AllThingsD’s Walt Mossberg here. Walt described it as a “high-end, thin and light Ultrabook model with a high price tag.” The other Ultrabook is the ThinkPad T430u, geared more toward small business users. Read the full story at All Things D.