Here are my thoughts, and I know I have received these in the past.
Since you have to have an email address to have Amazing Charts, why not have an email newsletter way more often than we get them now. Plus, I have heard from users who don't even get them.
I would recommend an every two-week email newsletter than addresses things like: new users, EMR news such as CCHIT, etc., what suggestions have been made that are good, what suggestions may be implemented in the future, what may not be implemented and WHY (such as code restrictions).
The main thing would be to address future updates such as Version 5. I think talking about it every two weeks is better than going three months and then finding out why the target date has been pushed back.
I think communication is the key between corporate and the users.