Apple Insider has sources who say the Newton-esque tablets Apple are working on will not be announced at Macworld 2008. The unnamed tipsters say there are challenges in the development stages similar to problems which arose with the iPhone last year. And as proof that the Macworld madness is nearing, Apple Insider also received a gallery of spyshots, including a Macworld display banner that reads "2008... There's something in the air." What ever could it be?

Source- http://gizmodo.com/343990/macworld-rumor-mac-tablet-not-coming-this-year-first-macworld-spyshots-appear