Epic, and the M&M 6: CE content has now been announced.
Might and Magic: Heroes VI Collectors Edition includes the following:
T-Shirt
Artbook
CD Soundtrack
Collectors Ring
Poster
Leaflet Heroes Kingdoms
Bonus ULC: Exclusive Map, 4 Exclusive Heroes and Dynasty Weapon
http://www.game.co.uk/Games/PC-Games...eroes+of+might