If you are looking for the official update notes , this version primarily finalized the content and addressed bugs following the expansion's launch.
The text you are referring to is likely associated with the of Age of Wonders: Planetfall , released around December 2020. File: Age.of.Wonders.Planetfall.v1.4.0.3.zip ...
Age of Wonders: Planetfall Season Pass - Paradox Interactive If you are looking for the official update
This specific version (v1.4.0.3) is often found on game distribution sites like Download.ir and typically includes the base game along with its major expansions: File: Age.of.Wonders.Planetfall.v1.4.0.3.zip ...
: Adds the Oathbound faction and the Grail Configurations. Invasions : Introduces the Shakarn and Therians.
: Adds the Heritor faction and ancient empire secrets.