The VOIDRUNNER'S CODEX is coming! Explore new worlds, fight oppressive empires, fend off fearsome aliens, and wield deadly psionics with this comprehensive boxed set expansion for 5E and A5E!
With the number of changes in the previous thread, I'd just call it 6e
In all seriousness, I think accessibility would still be desired in New 5e so adding a decimal or the word "advanced" could turn newcomers off. I wouldn't want to start in anything that has the word "advanced" in it unless it always had it like Advanced Wars and I definitely wouldn't feel welcome in D&D 365d20/2 redux remix definitive edition like in Kingdom Hearts.
I'd probably call it D&D 5th Edition Expanded. Acronym 5ex.
Oh god, I just realized that looks like sex. Well, back to the drawing board