Any more info on trusts?

I just hope it does not take too long for them to get Trust working for 2.0 to 4.X MSQ and other Dungeons since long term wise they need it to help the new players and the developers acknowledge this since as the game gets older the longer it will take for newer players to reach current endgame (unless they pay for MSQ skip) and if they play DPS jobs they will get more annoyed due to DPS queue without the help of Trust system.

Also gives them more reason to get creative with new Trust Companions like getting Hoary Boulder as a trust Companion and how to Unlock them through methods outside of MSQ.

So, I was thinking about the E3 trailer, and how it really looks like we're calmly talking with Solus at the end of that dungeon with the cave paintings (you know, the one where he says THAT).
I'd put good money on Solus himself being a trust member for that dungeon.