Reality is IMAX is not as popular as it once was either. They went from big screens to pseudo big screens squished into regular movie theaters – and then turned the volume up to +11. I have not watched an IMAX movie in an “IMAX theater” since The Hobbit came out – and the IMAX experience wasn’t much there, on one of the IMAX squished into a theater screens.
IMAX is now working on “IMAX VR” (which presumably includes 3D)
Source: IMAX to show less movies in 3D as it realises cinema-goers don’t want it | The Independent
I’ve been reading about glasses free 3D projection systems for some time – they are certainly coming and this would be quite exciting for Avatar 2 to launch glasses free 3D theaters – but it is not yet for certain that this will happen.
Avatar 2 Could be Projected in Glasses Free 3D
The intent is that VR180 is a simpler format to shoot, costs less to shoot, may be easier to edit – and generally makes VR-like video production more widely available. The format also supports 3D.
VR180 cameras are expected to be on the market by late 2017 or early 2018.