But they aren't going to be pushed into the closet, either. The 9100XL is the clear leader among the early 13.3-inch machines. If you saw it sitting unopened on a desk, you wouldn't notice the extra size. The extra real estate required to accommodate a 13.3-inch display has been put to good use. I do believe a large number of notebook buyers will decide that the extra size and weight of the 13.3-class machines are more than offset by the advantages.
Price is a different matter.
I don't argue for a second that 13.3s are going to become mainstream notebooks this year or next. By year's end you'll see more reasonable prices for 13.3s, and by this time next year they'll be on the edge of mainstream pricing, if not yet quite there. Part of that downward price pressure will be from the even bigger displays coming later this year. The 15-inch models will be among next year's flashiest products. I'm wary of saying that 13.3 inches is enough.