On July 1st, Valve changed the weekend mode in Dota 2.
The new weekend mode in Dota is Jungle Colosseum. It is the return of the old Colosseum mode that appeared in Dota in 2015.
In this mode, two teams of 5 players fight for control points. To capture a point, you need to stand on it for the required amount of time.
The Weekend Mode was added to Dota 2 on June 10th. By playing it, users get additional Dota Plus shards.