Strongly Typed enums get my vote. Pascal has only had these for around 40 years, so it's good to see C++ finally catching up.
However, the publication of the standard is really a non-event. What's much more important is when the features you want to use are actually fully and reliably supported with real-world toolchains. There are folk that seem to actually enjoy writing standards-compliant code that fails to compile on any known compiler. Good luck to them.
