That is fine endgame study, Afek! First, because it has a comparatively short solution with some pitfalls on the way, ending up with some surprising, paradoxical moves - all what constitutes a good puzzle in my eyes.
Second, beacuse the initial position is not completely unlikely to appear in a normal game. In fact, and because of that, it should be possible to add some more forced moves leading to the initial position, but there is no reason for that. That is just to accentuate the studys qualities compared with many other modern ones, where the initial position is completely unlikely and not possible to bring forth with any sensible moves. It is nice to see that you can still compose such "clean" studies.
By the way, I nearly stopped after reaching 6.Kc2?, believing the ensuing endgame with R+B against R was winning as the position of the black R is indeed rather poor. Closer inspection showed me it was not. But, anyhow, in the process I learned some more about this end game - fine!
I suppose you have cheked that all out with the tablebases?
But, anyhow, the very nice 6.Kb2! is a brilliant solution.
All you young people, mostly watching chess on a screen, only touching real pieces at tournaments: You should try to solve studies like this OTB! - it will for sure pay off!

And when will we have the next one?

Apologies, my mistake, the next one is now up (over here).