Despite the rumors to the contrary, the uptake of "coax-free" facilities has been slower than many proponents have forecast. That situation may (finally) be on the cusp of a major change, as media transport was only one of several technologies required to make a coax-free world possible.
Even with IP media transport, the system timing and control was frequently not IP-based. In addition to that, the media carried was still "coax-style". What has happened in SMPTE (and other SDOs) to enable the long forecast change?