in my pictures, the center one is the old one. on the picture of the underside of the caps, the old one has a horizontally rotated G on the edge of the cap. The new ones have a vertical G.
Picture of tsangan's old one (horizontal G) and WFD's new one (vertical G) show the same thing I see.
I checked a couple other Esc caps. A German pad-printed blue Esc and a Dolch Esc both have horizontal G. All other old 1x keys I checked have vertical G.
So far I only see other non-Esc keycaps and the new red Esc keycaps have vertical G.
Not enough to say one way or the other yet.