Namely, the mounted turret is a new weapon coming to Fortnite, a stationary weapon beneficial for players that want to keep control over a particular area. This was announced throughout the MOTD, the message of the day, and can be still found on the news section.
The official description points out that the mounted turret does not have ammo. Therefore, we’re still not certain how the mounted turret will change the meta, but according to the item rarity, it won’t have that big of an impact.
It is also expected to be quite an important item deep in the late game, and quite propitious in Pro Scrims. The new mounted turret will be released with the next patch, which is most likely to be Tuesday, as usual.
Overall, Epic Games have dedicated themselves to bringing new content rather than optimizing the already existing one. In the end, it may be the reason for temporary frustration by the players, and community bitterness is not wanted at all.