I believe the 2016-2017 version of Doom Bots, also known as the Teemoing, comes about every year around the Harrowing (which is around September-October).
The Other Version, the Original Doombots will most likely never see the light of day. The Teemoing was designed to be a revamped version of Doombots v.1 & has much better gameplay.
Doombots Mk.1 : Destroy the Enemy Nexus, Doombots gain extra powers on higher difficulties.
Doombots mk.2 (Teemoing) : Survive the Timelimit, Defeat Devil Teemo to win. Doombots gain extra powers on higher difficulties, but you gain buffs for defeating the bots.