NHK are slowly making me consider a move to Japan, just so I can experience these things hands-on. But at CEATEC, they had some 3D goggles on display, sporting an 8K resolution. These goggles were able to zoom into a picture without degrading quality significantly.
8K resolution has been called Super Hi-Vision by NHK, which offers 16 times the resolution of a 1920x1080 Full HD image. NHK's 3D goggles showed off some 3D diorama images of locales in Japan, and were captured by Super Hi-Vision cameras in either 4K or 8K. A user can pan the goggles around, while manipulating a lever, where they're able to zoom in and out of the image. The super high-resolution 8K image provides the ability to zoom in at up to 16x, and full receive a Full HD image - beyond impressive.
It'll obviously be years and years before we see 8K even reach mainstream, but it's great to know the technology is being worked on now, in the very early days. It will also make getting to 4K seem not so impressive.