Well, now that gamejam is over, I would like to know how the winners will be classified, by which category? (fun or by theme?) And I remember there were some games that were copies from other developers, will they also be classified?

Yep, I would also like to know this.

According to the jam's rules, only the games which have a higher than the median score in use of theme are eligible for the prize. So, in this jam, only the top 8.  Of course, in this case it doesn't matter since fun and use of theme generally correlate. This means that the top 3 games in fun should win (hopefully not counting the game that was copied from another dev.)

So when will we get any news from the host? We can't be sure about the results until they're confirmed.