This part of the ad, however, indicates something bigger:

Entertainment is evolving rapidly. The future will not be limited to passive 2D experiences. The Virtual Reality team will explore and create the platform and interface for immersive storytelling. This will include an ingestion and playback platform for Virtual Reality experiences.

As UploadVR noted, that makes it sound like Amazon wants to do more than just create VR experiences. The second and third lines, in particular, hint at building a platform à la YouTube where people can watch VR videos, similar to Wevr's Transport. Either way, it was only a matter of time before a behemoth like Amazon got into the VR game, so the move isn't surprising. We just have to wait and see what kind of virtual reality offering the company comes up with.