Nowadays, it's not really a question of whether tablet shipments will surpass notebook shipments, but when. Back in July 2012, NPD forecasted 2016 as the year, but today it's saying this year will be it. More specifically, NPD estimated tablet shipments will reach more than 240 million units worldwide in 2013, compared to the company's projection of 207 million notebook shipments this year. This gap is significant enough that, even if NPD's estimates are out by some margin, tablet numbers will still overtake those of notebooks."

http://hardware.slashdot.org/story/1...ebooks-in-2013