Overall, yes, but it decreased throughout the season. More importantly, his increase did not provide better results.
We see from this that the velocity bump Means experienced in 2020 was the second largest in baseball. That should be exciting, right? Everybody loves faster fastballs, but for Means in 2020, fastball velocity wasn’t all it was cracked up to be. Rather, Means regressed overall from his 2019 highs, with a 4.53 ERA and 5.60 FIP, which is not good by any means.
....While finding a couple of extra ticks in velocity, Means didn’t quite reap the benefits that would normally be expected from that. Notably, Means wasn’t seeing a jump in strikeouts, which is not the greatest of looks considering he already wasn’t the biggest strikeout pitcher in 2019:
Also a good take on what happened to his CH with the increase in velocity.
https://www.pitcherlist.com/john-means-is-still-a-work-in-progress/