Jon does post roughly annual updates as dredmorbius pointed out; this is the last one I could find on a quick search: https://lwn.net/Articles/504952/ That's probably slightly more positive than others, which typically seem to be along the lines of "scraping by, subscriber counts are roughly static".

(Please consider subscribing by the way! Lwn is a fantastic resource in my opinion, and I'd hate for it to go away).