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From the linked paper [0], from the description of figure 2 on page 2, it appears as if the "enclosure, flexible nozzle and gimbal structures" are all 3D printed.

The description of how they empirically found a good nozzle shape also implies that they 3D printed the various designs before settling on the final version.

[0] http://www.disneyresearch.com/wp-content/uploads/Aireal_FNL.... (22 MB)

Yeah, I was wondering why they kept repeating that.
My guess is that they want to make sure the Patent covers 3D Printed versions as well.
Or simply because 3d printed is a huge buzzword right now. Technically, 3d printing these offers no benefit over more conventional technologies like injection molding.