It has a resistive touchscreen. What's more they're saying they're going for resistive because it's "more accurate" than capacitive and capacitive would be a "step back."
Seems like you never used the N900 touchscreen - it not like the cheap resistive screens on low end phones, but a high quality one. It is just as usable as a capacitive screen for touch and can be used for *very precise* pointing. That's one of the reasons people have been using their N900s for drawing pictures and maps. Try to do that with a normal capacitive screen - it's like trying to draw in boxing gloves.