All exciting stuff!
8th Edition army selection percentages, but with Lords and Heroes merged into one, new percentages for Allies and mercenaries adding some structure to that aspect of the game and some 6th Edition-style minimum requirements and caps for specific units.
Lord-level characters will now be divided into ordinary versions, as per the Bretonnian Baron, and a particularly powerful version as per the new Duke profile (though the latter is limited to one per army, quite rightly I think).
Bretonnians now seem to have a peasant character (the Sergeant-at-Arms) as a new option, which can now make largely peasant-oriented armies a reality.
The horde special rule has returned in some form, but seems now to just apply to sword-fodder units that deserve the accolade, as it should have done from the beginning. I wouldn't be surprised if the new version of this rule simply allows the unit to make an additional rank's worth of attacks (as per 7th Edition Giant Rats' 'Wave of Rats' special rule), which should be fine. Shieldwall is now a universal special rule rather than a Dwarf-specific rule, but of course most Dwarf units should be able to benefit from it. It no longer refers to Parry Saves now though, so it sounds as if that's now going.
Great Weapons now seem only to give a +2 Strength bonus in the first turn by the way they've worded the article

. I seem to recall this might have been the case in 7th, but I hope this isn't true for TOW as well and that they've worded it wrongly in the article. But at least they haven't included the daft rule in 7th that claimed Shields only worked in close combat.
Armies of Infamy sounds fun, and looks to be a way for them to incorporate specialist army roster variants like Slayer armies, a nice throwback to 6th where the earlier army books used to talk about alternative army list structures one could implement in friendly games. Indeed they've pulled out a fair few stops when it comes to the fluffiness of the game, because one thing I particularly like is how they've now written specific rules for the armoured monk model included in a Men-at-Arms kit. That's a lovely touch that really echoes the sort of thing that the GW of old might have done if they'd thought of it. It certainly shows that the ruleset for TOW has been a labour of love for whoever's been writing it.
Also, it sounds like we might be seeing something else Tomb King-oriented on Boxing Day (Off-White Christmas, i.e. bone-coloured Christmas? Hint-hint-nudge-nudge).