So the biggest thing I noticed in the new core book was the massively expanded section on Ulgu with map and description of Malerion's "Legions". I don't see how it won't be Ulgu with such an expansion in info, if you haven't I suggest giving that section a good look over for some nice tidbits.
Well, the rumors for Black Templars say, new codex supplement, New Grimaldus, Helbrecht, Sword Brethren, Emperors Champion, all in primaris flavor, as well as some upgrade sprus. Time will tell as always.
Well it really solidified to me that they had to skip Broken Realms :Allarielle/Everqueen now, curious if the story beats were placed inside the Kragnos book or just the warscrolls and such.