About the Hero Slot

This question had already been asked before, but today I found that Idejder answer it.
So many of you maybe already now the definite answer about this question.But to convince the issue, S2Idejder answered that after this 60 hero slots is full, they'll add 12 more slots(two columns).But what makes me confuse, 12 slots in Legion and 12 slots in Hellbourne?
Or maybe 6 slots in Legion and also in Hellbourne?
So just wait for it, there'll be a lot more heroes coming soon !
Until now, I think S2Games are doing a great job.