“Hi, Capsuleers will be awarded Skill Points during the Skilling is Just a Means of Communication event for PvP kills, with daily challenges being issued at downtime each day between 12 March and 14 April.”
Maybe CCP decided to end it prematurely, probably because most people just killed their alts and this was not what they were trying to encourage? It was hinted at this yesterday, instead of “next challenge available in…” the text displayed after getting 10k sp was “complete”.