[cfe-dev] New flag for C++Next

[Keane, Erich via cfe-dev]

As many of you know, the committee sent C++17 for ISO approval, so any further features voted (including a few other extensions that we have) are likely targeted for a "C++20" or so.  I was wondering if there was going to be another 'temporary' flag (ala c++1x,y,z), and what it was going to be?  Are we starting back over at 'x', continuing to 'a', or forgoing it entirely?

-Erich