Feasibility of Touch Screen Apple Notebooks
Businessweek explores the possibility of Apple introducing some sort of touchscreen laptop in the near future. While most of the article rehashes circulating rumors, the author did get some insight from iSuppli analysts regarding the feasibility of introducing a multi-touch screen into a future Apple laptop.
According to the analysts, adding a multi-touch screen onto a MacBook Pro would add 50-80% to the cost of the existing screen and would likely make it too expensive. However, introducing a multi-touch screen into a 9 inch screen would be a "relatively easy leap from a cost perspective".
Given this, the author speculates that a small (9" or so) inexpensive (sub $800) multi-touch notebook is a more likely possibility than a full-size multi-touch notebook.