Well I don't know if anyone else has seen the new competitors of the Rift like the ANTVR. Basically, it is similar to the Rift, but uses a different lense system so that you see the entire screen (the rift's image is really circular). It also has cutouts at the bottom of the frame that you can slide open so that you can view things like keyboards, controllers, etc. when you have the device on. It is a little sketchy on the resolution, so I do not know if it is straight up 1920x1080 per eye or if it is like the Rift in that it is two 960x1080 panels which combine to form 1920x1080 (even though they really do not). Their prototype is also designed to work with standard HDMI 3D formats, so you can watch 3D movies on it, 3D games from PS3/PS4/Xbox360/Xbone/PC. Basically it looks like it is really a step ahead of the Rift in terms of design being able to support standard formats that already exist, as well as more advanced integrated positional tracking (as opposed to needing an external camera for tracking).
That said, it remains to be seen if they will get the traction they need to go compete against the Rift, especially given the backing in terms of funding the Rift has now received by being acquired by facebook.