I'm not sure if they ever shipped it to any retail customers. I'm a JVC projector owner so I kinda follow JVC projector news. The higher end JVC PJs are used by Boeing for flight sims:
JVC accommodates that use case with things like extra chassis mounting points to allow the projector to be mounted securely in a dynamic environment. This looks like it may have been an early POC in native 8K for Boeing.
Well that's not technically true...
https://www.jvc.com/usa/pro/projectors/dla-vs8000g/
But obviously not affordable.