I'm just trying to offer an opinion. I don't think we should start using the term HD on this aircraft. I mean, yes, it's denser than before, but it's not the 777HD.
I worry that if we start referring to this as the HD while the real "HD" is still being used, then that could get confusing
Because now I just read vernonc's post, and I don't know if he's referring to AC156 as being the old HD or the new 777 400 seater version.