YES!!! About time. Thanks Avast.
I have to disagree what DavidR mentioned. This is the right time to cut off Avast 8 and below versions starting from avast 9 through to avast 4.8, including VPS updates.
As far as the major concerns go in this topic, users with older systems that have older versions of avast should upgrade/buy a decent computer of their choice so they can install the latest version of avast. They will definitely not like a forced upgrade on their older system, as users had reported issues/problems in this forum.