Have any of those companies announced a release date for any of their products though? As far as I am aware, the rift is still (or will be) the first consumer accessible VR product.
Technically, the Gear VR has been available to consumers for months and months already, though since it lacks head-tracking and desktop-quality graphics it's not quite the same thing. In addition, being what Samsung calls an "innovator edition", it has not been fully marketed to consumers at large (e.g., on buses and billboards).
However, John Carmack hinted in a recent keynote on mobile VR[1] that the next version of Gear VR would be promoted widely for all consumers and that it would come out along with the next major Samsung phone release, presumably the Note 5. The Note phones get updated every September.
