Since it’s working, until ckeditor forces their hand, don’t expect to see it change. It’s a huge component and critical to everything… it touches practically every part of the suite. Changing it literally will be MONTHS of dev time that stops everything else.
Like PHP7, once it’s actually EOL’ed… it’ll be done. Until then, I don’t see it changing. Maybe go ask ckeditor when they’re going to finally let the old version die. 😉
Once that known, you’ll know when it will be updated.