I got a minor update on the A6700 from a new source:
A6700-4k120 is true. But will come in FW update along with zve1
While this is not coming from one of my trusted sources it sounds possible the A6700 will have the same fate of the ZV-E1. Probably they use the same new engine and software updates and it makes sense that the 4k120p feature will have the same kind of “delay” as on the just announced ZV-E1.