Unless they get the assembly listed as being suitable for grounding the corner style is academic. I am betting, when they do it will be stamped in the cover. I certainly expect to see a full page, glossy, ad in the IAEI magazine.
Yes I am one of those people who thinks every circuit should have a green (or bare) wire ground.
Fortunately, for me, that was the way all state RFPs were written so I didn't have to split hairs about it.
I am just a spectator now so it really doesn't matter too much what I think.