Game.co.uk have listed Heroes of Might and Magic 6 Collectors Edition, In the UK it's exclusive to them.
It includes the following:
- 4 exclusive in-game heroes
- two exclusive in-game items
- commemorative ring
- 164-page art book
- CD soundtrack
- T-shirt
- A poster.
Plus one month free subscription to Ubisoft's browser-based MMO Might & Magic: Heroes Kingdoms.
What's really funny about this exclusive release at GAME, is that you can also pre-order direct from Ubishop. If you do pre-order from Ubishop, you will also get beta access, 1 extra hero and an extra item ( no idea what they are).
Priced at £49.99, it pegged for released sometime in May 2011.
I also found this video of the Collector's edition contents, see below: