Thanks for the reply GFM, and of course we follow basic admin procedures and do both of the things you mentioned. We have an archive of every installer the past two years, and only deploy new versions ahead of time to our non-critical sandboxed machines for testing.
All that being said, that does not absolve Avast from not communicating feature-set improvements/changes to their user base. Transparency is always key, and it's not like we're asking or expecting much...just common practice release information in a timely fashion.