Five was a failure??? What are you talking about? Maybe I'm not very knowledgeable, but it seemed to me that with the release of the fifth installment, many acknowledged that this game was better than the previous ones, and the Heroes series gained new fans!
Interesting. Well, as far as I know, they should announce a new race soon. I'll be waiting :).
Added 10 minutes later
They wouldn't make two add-ons for a failed game, plus a total of 2 million copies were sold. Considering that the game is only for PC and has no DRM, that's quite acceptable, and Nival even earned $10 million from the fifth installment. However, it seems that Ubisoft is trying to adapt Heroes to more modern gaming standards to make the game appeal to a larger number of players.
Демократия есть одурачивание народа при помощи народа ради блага народа.(Уайльд Оскар)