Probably high time I started using Steam for patch notes rather than just the discord! Balance patches:
Resources are no longer capped by the storage cap defined by warehouses, refineries and stables; instead, the storage cap keeps your resources safe from looters. This is intended to fix the issue where many of the resources in the market were far cheaper than intended, as players were selling off resources to avoid hitting the caps.
NPCs will now equip relics to make them more of a challenge, with better NPCs using better relics. Be sure to scout your targets first in case they've found a meaty tier 10!
Items can only be bought to be used immediately, and only items won from quests or looting can be stored for later use. This is to alleviate an exploit where someone could mass purchase useful items to hide gold from a potential attacker, retaining those items even if the city was lost, which discouraged defense. This has been offset by warehouses now keeping a portion of your gold safe from looters.
Quality of life (QOL):
The barracks now has two toggles that allow you to split a queue amongst all available barracks, or all idle barracks, to prevent having to manually queue troops in every barracks
Misc
The overview map on the map view now updates every 3 days. Previously it only updated the very first time you joined the server