Not really, they've had 3 releases so far and another next month. DK1, DK2, GearVR and the new S6 GearVR coming soon. For a company that hasn't had a release they sure seem to be releasing a lot of stuff.
The DK2 is as good of a product as any early adopter type thing. If you are even mildly interested in VR it is worth it. I picked mine up a couple months ago and have used it every day since. sometimes for 6+ hours at a time.