Are there any plans to make a sixth installment in the Heroes series?

For me, Heroes V is a game that I still play... I bought it about a month and a half after its release. I still play it (of course, as the Tribes of the East faction) and it doesn't get boring. GSC creates terrible maps, so it's no surprise that many people don't like them. There are enough creatures and spells. The game doesn't lag on maps of any size (it just takes a little longer on the highest setting, which is tolerable). So, kudos to Nival for creating a great game.