Intel estimates that ultrabook shipments in 2012 will reach 20 to 30 million units, and they could double or triple in 2013.

According to Digitimes, integrating the supply chain will be key to success and second generation ultrabooks should start appearing on the market after May (Computex time). In addition, Intel is pushing hybrid designs, set to appear in Q4.

Interestingly, Intel is said to be working with unnamed suppliers to design reinforced plastic chassis. The new plastic chassis, or shells, could offer the same sturdiness as metal designs without the need for pricey and exotic alloys.

More here.