(In reply to Florian Weimer from comment #0)
> For more details, see:
> https://fedoraproject.org/wiki/Changes/
> Glibc_collation_update_and_sync_with_cldr
>
> Update collation data in glibc to an ISO file from 2015 (in sync with
> Unicode 8.0.0) and sync collation rules of the locales with CLDR.
It is Unicode 9.0.0 actually.