What new weapons have been added to the game recently and how have they changed the balance of power in matches?

Respawn rarely adds new weapons to Apex Legends simply because the current arsenal is diverse enough, but at the same time, players are not overwhelmed with choices. The newest weapon in Apex Legends is the Nemesis, an assault rifle that uses energy ammo. It has added variety to the gameplay but has not dominated it. You can see the weapon in action here: https://www.youtube.com/watch?v=ewkAVUFhovI