-around 60 new units and new mounts
-animation fixes and improvements
-LODs for new and old units(for a smoother experience)
-campaign and battlemap sound fixes(eg. voice mods)
-new faction intros
-menu changes and improvements
-new reforms
A complete revision of the battlespace in terms of unit stats and performance. Every single unit has been reviewed and amended, that review including (but not limited to) standardisation of movement, attack, defensive skill, fatigue and morale, missile range and impact; a consistent approach to special qualities (including wholesale removal of ap from missile units); rebalancing of mass and cohesion; reworking of cavalry, skirmishers and missile units so that each actually functions as intended; fix to phalanxes so that they actually work as the anvil. Consider 2.01 where javelineers didn't throw their missiles, phalanxes were spongy and easily infiltrated, precursor spearmen were a pushover in melee, elephants didn't work, cavalry charges were feeble and horsemen gods in melee, the list goes on.
Re-costing of every single unit on a consistent formula so that we no longer have oddities like Xystophoroi being both better and cheaper than Hippeis. Now unit size, equipment, training and status determine what they cost, which is consistent across rosters.
Change of many factional bodyguard units with either new permanent units or placeholders more like the intended ones (Getai, Bosporans, Nabataeans, Epeiros).
A complete overhaul of almost every single government building and the recruitment it provides; Hellenistic factional buildings no longer provide Hellenistic units (only locals - except the Royal/Dynastic Administration); addition of local auxiliary support to the Roman Provincia building after the Marian reform; every faction has access to at least one building providing local recruitment options. Significant expansion of local differentiation in recruitment, with the addition of a dozen new hidden_resources.
Allied Governments re-done. Client Rulers added to the Allied Government precursor building.
Reconcepting and rewriting of the colonies system (both Hellenistic and Native) to be distinctive and provide different units to the factional governments.
Numerous fixes to all the old scripted events (reforms, colonisation, independence etc), which have been reviewed, tested and updated to function as designed. This includes a now-functioning Koinon Hellenon Reform - something that was broken from the earliest public releases.
New faction missions (Baktria, Boii, more to come) and tribute/independence scripts for Baktria and Hayastan.
New reform events for the Hellenistic military and Romani.
The mercenary system reviewed, restructured and rebuilt. All mercenary unit costs revised in line with the new unit cost formula. Changing roster over time implemented.
Review and reworking of all starting garrisons and armies.
Review and correction of many of the traits and ancillaries. As some examples, inheritance is now working better, and you can get a physician ancillary outside of a settlement with a level 3 Fertility temple.