It look like 2017 will be Final Year of Steven Universe and Season 5 will be their final season
No sign of Steven Universe getting renewed for Season 6 after Season 5, Even though they made a petition of getting Steven Universe a more season after Season 5 but I don't think that going to happens.
It would be surprised if CN decides to renew SU for more season but I doubt it.
the 156 Episode of Steven Universe will be the series finale
2013-2017