DavidR
12
Then I guess you haven’t looked in detail, a very handy tool in most web sites is the site map link, usually at the bottom of the pages and this is there in avast.com, http://www.avast.com/en-gb/release-history.
You could also bookmark/monitor the >> Updates << topic in the General forum or click the Notify option in that topic and that will keep you abreast of updates (email when new posts are added) including avast also.
You could also monitor or subscribe to the avast blog, blog.avast.com.
Add that lot to the about avast or the avastUI itself and essentially there is more information available than you can shake a stick at