If I remember it right the list of of Harmattan packages had the "touch sense" package. It should be for haptic feedback.

The thing is: haptics can be done in many ways. Even N900 can emulate some haptics (CSSU has this feature) in a limited way.

However, Nokia has patented a couple of different kinds of methods to create haptic feedback. One sophisticated method is to create haptics on the screen surface by lifting certain small parts of the screen (there is a Nokia patent on that, don't know if there is an actual prototype available).