The follow-up to Armored Princess has been revealed; currently in development is a new standalone expansion called King's Bounty: Crossworlds.

1C lists several new features, and in addition to new spells, abilities and creatures, a Game Editor is also said to be included. We can assume this means that Crossworlds will be the final expansion of King's Bounty.

In other news, there's also an interview with the fellas from Capybara Games out on Gamasutra.