https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86590
--- Comment #17 from Jonathan Wakely <redi at gcc dot gnu.org> --- The P0595R1 design was approved (very favourably) by the Evolution WG at the last meeting, so will be forwarded to the Core and Library groups for wording review. So it's almost certain to be in C++2a in some form, hopefully it will get through Core and Library at the next meeting (November) and get into the working draft.
