Ok, my predictions:
- no new models or a single character box, maybe even named character (as we saw on rumor engine - it wasn't for warcry and it wasn't for Dark Aelves. It still can be anything, but I'll keep fingers crossed);
- 6 warlord traits for every type of Hero;
- our magic lore. Not reprinted, I hope, but fixed. Maybe, even two Lores - for slann and skinks respectively;
- 3-6 different rites for skink priests;
- battalions going up to modern standards - FoS and DT will become "chapter tactics" and other battalions reduced to a single ability;
- we'll get 3-6 new "chapter tactics". Some will favor Saurus, some skinks - and a mixed one like Big Waaagh;
- Thunderquake will lose rerolls, at least for saves, Shadowstrike will lose 3" drop. They will be either fully reworked or dropped in price;
- Guards will lose 2+ and get 3+ rerollable or FnP;
- maybe 2 wounds for saurus;
- mount traits for Carnosaurs. Maybe for EotG stegadon too, but not likely, unless they will bring back skink chief;
- new relics for saurus, skinks and slann. I expect a total rework, since they did nothing to them in last GHB;
- we won't lose any units, except, maybe, old Oldblood;
- no more attack stacking on Oldblood on carno;
- looking at the magic - they will screw us one way or another. Magic is absolutely out of synergy with our other abilities and 2 usefull spells are just pleasant bonuses. This mean, current team don't, probably, get how Seraphon actually work.
My greatest fear is that stuff like 90 saurus warriors will be the way to go (at least if they won't renew the models, which is unlikely). They are my lest favorite plastic model in battletome. I do like knights, guard and skinks, but saurus are just way too boring.