This is another interview, still in russian, but it contains waaaay more info on KB2 than the last one and also photos of spells and lots of new units (some of them are similar to newer HoMM units, like the golems or the elementals):
http://www.gamer.ru/everything/king-...voe-znakomstvo
Still, there are major flaws, for example you need to have a certain leadership indicator to get dragons or something like this, which is absurd.