This is the 3.0 version of Legio. Further updates are planned.
Information on this update is in the description.
Comparing to the 2.0 version, this one has a new map for the Imperial Campaign (map from Ahowl11's Vanilla Enhancement Mod), and adds a new faction in Etruria. In addition, a few tweaks to other features are made, such as a reskin for Spartan Hoplites.