I think there’s a short-term and a long-term dimension to this.
What you say makes sense, in part because it’s been close to a decade since we’ve had a release. So some people might have reasonably concluded development was at a standstill.
So going out of our way to update them would seem wise.
The Tweet should obviously come from the CSL account.
Do you have contact info on those people? I don’t AFAIK.