Just so all you OR DK1 can have a sneek peak at the full game in VR, The update yesterday is also DK1 compatible. Its plug and play, so just plug your rift in and dont foget to set it as extended, not duplicated. It has a few things which will be different in the VR release, but its something to have some fun over the next few weeks.
This is not the VR version, This version will give DK1 guys something to chew on, so expect the full VR release in a few weeks to be much better. We can not confirm at this time weather the VR version release in a few weeks will be backward compatible with DK1. I will keep you informed.