Can I use my DK2 to develop for the Oculus commercial version and Gear VR?

I am sure this has been asked before, but I can't find it and need more answers, please. I have developed  for the DK2 and use Unity 5 Pro for developing my apps. What do I need know and what downloads / installs will I need (Oculus and Unity3D 5) to be able to turn out apps that are compatible for the commercial version please?