Gunn said on Twitter this afternoon that it would also be available in 3D.
DId he clarify and say "3D in US" (3D in US at 1st Release) or just leave it open? If the latter, we were already there sicne the international releases are just about written in stone.
Reminds me a little of the original advance press releases of BatB Enchanted Christmas when they mentioned DVD and Digital, but left off Bluray. It was a couple weeks or more along with multiple thread rants/near-immolations and cursing of Disney's heritage by both Romani and high voodoo priestesses before the BD release was confirmed even though it was a DMC Exclusive