I think I'll start referring to editions based on Batman actors...
"1e" = D&D West
"2e" = D&D Keaton
"3e" = D&D Kilmer
"3.5" = D&D Clooney
"4e" = D&D Bale
"5e" = D&D Affleck
... and this year's books are D&D Pattinson
There's a whole different feel when the Prime Material Plane is the hub of the Outer Planes. It makes the cosmic neutrality of old school Druids and major Greyhawk character more understandable.