I feel like I've seen some of these not to long ago and I've definitely seen the NFL ones already this year. I wanna say after the Patrick Mahomes skin dropped. I bought the NFL skin set in 2021. It releases once per year so your eyes need to be on the shop everyday especially during football season. If there's a skin I always miss that I own that I havnt latley seen is the NBA skins but I don't always keep my eyes on the shop all the time like I used to back in 2020 so it's possible that drops and I just miss it because it comes and goes quickly.
