At RoboCup 2021 there will be a virtual tournament without any hardware involved. It will be played with the latest rule set, except that division A and division B teams will play in the same tournament. If one of the playing teams wishes to play with division B rules, the match will be played with division B rules.
The infrastructure for this tournament will be provided by the RoboCup organizers. Teams are expected to run their software on a Linux system, likely minimal Ubuntu 20.04 inside a custom Docker container.
The setup and configuration for the competition is available on Github, so every team can test it beforehand.