Heroes 6 - Discussion

According to sources close to insider information, the sixth installment will be based on Heroes 5 and will incorporate ideas from Heroes 4.

Well, not that many ideas from the fourth game weren't implemented in the fifth... that is, only uniform growth, movement without a hero, and castle assault were left out. The hero was still released onto the battlefield, albeit in a reduced form... and the selection of troop construction was implemented somewhat differently.