I assume there will be all of Wildfire and Beyond Wildfire, because those are the starters for the faction. I also think the Sirious, Alpha, Lamda, and the Zeta will be in it, seeing as those are new or soon releases and it would be unwise to not encourage new players to buy them. All of the defiance probally won't be in it as they are unavaible to get for right now. The Aleph and Mercs probally won't be in Code 1 as they are not native to the faction. This all purely speculation, but I believe that most of it is logical. Of course Adepticon is coming (at least a video is) that will give a definite answer.
also: all the remotes, since the box is announced for C1. I would also say Hyppolita? We still don't know what the hero box contains, might be her "regular" version. And don't forget the special monk we already know!
I don't think that there will be a Hippolyta profile, seeing as she is not native to the faction (originally from Aleph), which is the same reason I don't think she'll be in the Dire Foes box. If Hippolyta was in Dire Foes it would be for the Greeks, not us. Also, what about the Kunia Ninja, was he also announced for Code 1 or just N4. I would love the Kunai to be in Code 1 personally.
I'd probably expect Saladin for O12 before Valkyrie as a Hero type, his current model is pretty old, isn't it? Note also that we don't have timelines for many of the releases, so even if the stats are in the Army Update in April, it doesn't mean a figure is around the corner.