Isn't still a little bit weird that the expansion is described as "completely edition independent" but then it's linked to C1 only? I mean, in the wiki, regardless of what HiG may or may not have said.
The fact that the expansion has been described as "edition-independent" automatically links it to C2, C3 and any other possible future edition, even without a HiG official delegate esplicitly stating what's already obvious by context. IMO, of course.