The Rainbow Six: Siege 4.3 patch will be released for the PC on 12 October and they are activating an anti-bullying feature.
This update is being released to address connectivity problems and the team says it will set the foundations for future stability updates to the online service. They do say this patch may get rolled back to 4.2 if the new tech they are trying doesn’t work out.
Another major feature they are adding in this update is the anti-bullying system which works as follows:
As promised, we are continuing to make improvements to our process for identifying and punishing team killers. In Patch 4.3, we have activated an anti-bullying feature. This is intended to prevent players from targeting a teammate and griefing them repeatedly. Players will now suffer the standard team killing penalty after killing the same teammate twice.
As a reminder, the team killing penalties can be found below. Be advised that we do not offer appeals for team killing bans.
There are numerous bug fixes in this Rainbow Six: Siege update and Caveira interrogations will also now complete regardless of whether an enemy player quits or not. Check the full patch notes here.