Yeah, it looks like we won't have climbing or the "Flight" spell in Might & Magic X. :( At least in Might & Magic IX, you could still climb mountains, but here they're taking even that away. :(

Here's what this article says:

In order to climb some hills/mountains, you might however need the respective blessing.

Translation: To climb hills/mountains, you may need the corresponding blessing.

Probably, this will be a blessing from Silanna (the Earth dragon).

There will definitely be a blessing that allows you to travel through water (most likely a blessing from Shalassa - the Water dragon).

There will be a total of six blessings - corresponding to the number of elemental dragons of Ashan. This includes Ilat - the Air dragon. I hope that the effect of this blessing will be the ability to levitate.