Heroes of Might & Magic III: Horn of the Abyss

It would be interesting to know: will this be purely a single-player experience, or will it be possible to insert new cities instead of the "cheating" Necropolis and Conflux for online play? (and what if the balance is actually improved:rolleyes:).

HotA is designed for multiplayer to the same extent as it is for single-player, just like the original Heroes III.
You can replace, for example, the Conflux by simply placing a Cove instead of it in the map editor. In fact, the same applies if you wanted to replace the Conflux with a Castle or a Stronghold... any standard city.