Lenovo today unveiled its newly expanded and highly innovative X1 portfolio . Designed for forward thinkers, the series includes new additions such as the brilliantly adaptable ThinkPad X1 Tablet with its unique modular design; the immersive ThinkPad X1 Yoga with world's first OLED display; and the award-winning ThinkPad X1 Carbon is even thinner and lighter, strengthening its superiority in the ultrabook market.