The funny part for me was that I read the Seat of Sacrifice raid guide before I did the fight so I saw "Familiar Ascian" mentioned in it. I was expecting Azem because that would make logical sense and then he did the wave. They had to have added that on purpose because people would've jumped to the Azem conclusion instead.
I also remember hearing someone say that one of the specters in the Seat of Sacrifice is supposed to be Hildibrand.
Are you sure they said Seat of Sacrifice? You can clearly see Hildibrand in Heroes Gauntlet so I'm guessing that's what they meant.
We will get the Bozjan content and the resistance upgrades in about a month (or 1.5 months I think) for 5.35 and it will get updated every patch, for the other big patches it will probably be like this:
5.4: more MSQ, Eden (final tier), a new Trial for the Sorrow of Werlyt (The Weapons) series
5.5: more MSQ, Nier 3 (final raid), the last Trial
5.55: the final MSQ for Shadowbringers and we will be ready to start 6.0
I think we are also getting 1 more Ultimate? not sure about that
I do think they said 5.5 for the next ultimate but don't quote me on that.