Where's my Challenger Skin :-:

In the beginnings of Seasons 5 and 6, there were skins released in the challenger, for Ahri in the start of S5 and Nidalee in the start of S6. I for one really enjoyed this skin line and seeing as the Challenger Nidalee skin was on patch 6.1, I was hoping for a third installment this year, but I looked at the current PBE today and saw there was no Challenger Skin in the line up.
Has there been word from Riot that I missed?? I truly enjoyed the skin line and want it to be renewed.