And that is definitively that ... for now. 5G's carrier features frozen
https://www.theregister.co.uk/2018/06/19/3gpp_freezes_first_phase_of_5g_standards/
Meta-standards group the 3rd Generation Partnership Project (3GPP) last week rubber-stamped the first "frozen" 5G standards.
A plenary in the USA saw around 600 delegates approved 5G Release 15, which gives operators the first phase of standardisation for the mobile standard.