User blog comment:DiegoAnime3000/RWBY Volume 3 Opening Scene is complete/@comment-4010415-20150612013214/@comment-3257939-20150612020307

Since Gray wrote '''Hello, Remnant. So good to visit you again.''' That might as well mean that Gray just started to work on the animation of RWBY. So instead of the Opening, he's most likely talking about the first scene of the entire Volume.