Apple, Microsoft, Nokia unveil and release new tablets Tuesday

An Apple employee holds up the new iPad Air on Tuesday, Oct. 22, 2013, in San Francisco. Apple unveiled a new, thinner, lighter tablet called the "iPad Air" along with a slew of new Macs Tuesday at an event in San Francisco. The iPad Air weighs just 1 pound, compared with 1.4 pounds for the previous version. (AP Photo/Marcio Jose Sanchez)