AnAkkk [1] filed a request to merge firefox-developer [2] into firefox-aurora [3]:
It's the same package
[1] https://aur.archlinux.org/account/AnAkkk/ [2] https://aur.archlinux.org/pkgbase/firefox-developer/ [3] https://aur.archlinux.org/pkgbase/firefox-aurora/
Request #3886 has been accepted by Kyrias [1].
aur-requests@lists.archlinux.org