The new patch on Nov 25th, 2021 includes:
1. New events that runs by December 8th, 2021.
2. Game balances change on mechas: 
Hotsteel (buffed), Trio of Enders (buffed), Neutron Star (buffed), Northern Knight (buffed), Aurora (buffed), Andromeda (buffed), Ranger (nerfed)
3. Balance change on vehicles: Unicorn Hovertank (nerfed)
4. Several Adjustments

You can check the full patch note in [url=https://www.supermechachampions.com/news/update/20211124/30914_987570.html]the official web