This is a surprise. As Epic announced on Reddit, there is no more Friendly Fire in Fortnite: Battle Royale. This puts an end to teamkilling. However, it allows for abuse!
Teamkilling in Fortnite is a real nuisance, especially on consoles. Those playing in duo or squad matches with random players risk becoming a victim of their own team.
Many teams, consisting of three members, fill the squad to then shoot the fourth member to grab their loot. There have been lively debates in numerous forums about teamkilling. Epic has not overlooked this.
No Friendly Fire – No Teamkilling
Epic has now announced on Reddit: Friendly Fire is now disabled. This change does not require an update on your consoles and is active immediately. This ensures that teamkilling is no longer possible – however, there are opportunities to trick the system.

Friendly Fire existed for good reason, as some players warn on Reddit.
Why Friendly Fire is Generally Sensible
Epic promises to thoroughly evaluate data from upcoming matches. This is also sorely needed, as Friendly Fire was not introduced without reason. There could now be more situations where the absence of this feature is exploited.

For example, a single player could bombard an enemy base with grenades or rockets while their teammates rush the base without having to fear for their lives.
Epic will make adjustments if the system is exploited too much now.
Active discussions are being held on Reddit about this topic. While many players reject the change due to the issues described above, others argue that disabling it is a step in the right direction.
Players agree, however: This change can be abused. Therefore, Epic needs to make further fine-tuning – just as they have announced.
Therefore, as always: Play fair! What do you think of the change? Let us know in the comments!