What's this? Not only is there a possibility of an Intel-based Mac in the near future, but it's also a laptop!? I'm so giddy I can hardly contain myself. This 13.3-inch model will allegedly replace the 14.1-inch iBook. Think Secret's highly reliable source, the same one responsible for the first reports on the Mac mini and photo iPod, said to expect to see this Intel-based iBook debuting at the Macworld Conference & Expo in January.