Penguins of Madagascar just got a new timeslot for my country. Is it that a good sign that POM won't be cancelled?

It's very hard to tell at this point. If there are 更多 episodes of PoM each week in China, then PoM is becomming successful in China, but we'll have to see what happens in other countries to determine the 总体, 整体 success of PoM.

Also, PoM didn't yet get a renewed contract for Season 4. Once we get that, PoM is GUARANTEED 更多 new epis.

Nice 你 got a new timeslot. Well, here in Singapore, we have no need for new time slots since we already get POM every 日 on Nick, WITHOUT FAIL. It's very successful here, with two episodes airing on weekdays and Saturday and four episodes on Sundays with reruns on the same day. RERUNS, I SAY! If we here get to see so much, that means POM is kinda successful in other countries. POM is NOT cancelling over here. I even got to see some of the unaired episodes long before Americans saw it.
SO... Good luck keeping POM!