@ conrad1961
My version of avast 19.7.xxxx same build as yours after a manual update check reported 190906-0 (as this win10 laptop isn't always in use) as up to date.
The right click > avast tray icon > about avast reports 190907-4 as the latest VPS, so the two aren't in synch and the highest doesn't appear to be correct.
However, after a couple of flick flacks between the two they are both reporting the same version 190907-4.
I wouldn't worry about it as you should also be getting the Streaming updates, these will keep you up to date until the latest VPS is released. Check the C:\Program Files\AVAST Software\Avast\defs folder and you will see all those streaming updates after your VPS version.