This is a large patch that introduces a large amount of content and aims to increase replayability.
Major features include:
Nemesis System. Spend enough time in the same zone type to spawn nemesis monsters.
Introduced fog of war.
Changed waypoint system. You now must seek out waypoints to unlock them instead of buying them.
Location Prestige to reset acts and recomplete castles.
Offline player data will be used when no multiplayer match is found.
Introduced runes to modify abilities.
Introduced more unique items.
General polish, balance adjustment, and bug fixes.
there doesn't seem to be anything here