BIRD multithreaded progress

Hi BIRD team, I have been periodically checking the cz.nic blog for more posts in the "BIRD multithreading" saga, but the latest one was about 5.5 months ago ( https://en.blog.nic.cz/2021/06/14/bird-journey-to-threads-chapter-2-asynchro...). Has any more progress been made on this? I understand the team is busy and I'm not trying to push, but I enjoy reading these posts and keeping up with the work being done. Best, Ross