I'm really dumb sometimes. I released Epiphany 1.2 thinking that this Monday tarball due was for proper 2.6 and not for pre-release. Oh well ;)
Epiphany users looking for a js console should try out epiphany-plugins. There is also an html error checker and a very nice popup blocker (View->Show/Hide popups remembered per site and a notification icon in the statusbar, that's all).