It isn't something that I'm overly concerned or interested in as I don't need to know the avast version or virus database version.
All I need to know is that it is working and up to date, that is essentially covered by the tray icon. You will see the avast icon or with either a Red circle and white cross over it or a Yellow Triangle with Exclamation mark over it. If I see either of these then I would be looking inside the UI for more detailed information.
I have SAS Pro which does have this info in the tooltip info, but the times I have bothered even looking (example for this post) I could probably count on one hand.