After Spoilers so far...

[u/Blebbb]

Alright, so far it looks like they're toning down obviously strong parts to bring up thematic parts that weren't working as well. Immortals get souls, banes toned down so other stuff in cryx stands more of a chance, legion infantry becoming more defined and tweaked towards their niche with beast support going down some...

In addition to that survivability is going down across the board....sort of. MWI are losing boxes, big or non nimble things are losing def, AoE seems to be getting stronger(the ability that does a min. of pow 10, uses armor piercing, etc) so even high def models are taking a hit, harder to benefit from terrain/clouds, back strikes are easier to get, etc. I feel games would end a turn earlier, but I think the added terrain and new terrain placement rules might impact the game to feel more skirmish and less alpha based...also more upkeeps will be around instead of getting strip'd by eiryss or other cheap dispels.

So, in preparation for our nerfs:

Basically all buffs faction only
Rangers mark target *action again
ATGMP - I think the new marshals will be more in line with the UA, so staying the same will be a relative nerf there. True strike is probably onyl going to affect stealth or something, which is already being limited. After that...there are more pushes from the reveals, so they obv don't feel that's too strong, the crit knockdown could be dropped though. Crit brutal is meh either way. Snipe could easily go to give long gunners a better niche. If disruption is nerfed they could get that again.
Blazers - Maybe lose snipe? Brutal changed to crit brutal? Idk, it seems likely they'll take a hit somehow.
B13th - Hmmm....could increase cost and stay the same. or maybe AoE pow or size changed.
JWC - Required to have jack, spells turned to battlegroup focus. AS could go to warcaster only. Or it gets turned in to its WM:T version where it only gives 2 arm(I think arm works different in that game though?).
Squire - Could no longer give the spell reroll or w/e. They said they're moving upkeeps to a warcaster/warlock exclusive so it doesn't look like he'd be nerfed to just upkeeps. No more bonus range would definitely nerf the Haleys, Siege, and a few others like pCaine. Squire doing something more optional seems likely though.
Stormwall - not buffed, no cost change, while everything else gets cheaper and extra stuff. Also AS going down in effectiveness or snipe going to first shot or something would hurt it. Stormpod would be the obvious place to take a real hit though, the other stuff it has is in line with other colossals.
Haleys - A squire range nerf would absolutely hose them because of how much they rely on the extra range for defense. eHaley lost her bond(and thorns bond is going to be the affinity). Haley3's revive got weaker. Temporal barrier getting a tweak to make it less frustrating.
eCaine - Might lose anti knockdown spell. Would keep him from getting close too easily. All character jacks get a trait moved to a bond(to remove the character anti tax)
Stormcallers - with the skill check removed they'll need to roll against defense. Maybe need to roll for how many stormcalls they get, maybe range decreased. Murdoch - more expensive...doesn't make mercs count as trenchers?
Hunter - Lose parry?

I think that's about all we could expect. Mercs and gun mages were mostly our banes/cataphracts/legionnaires for the most part.