I've opened an account on twitter asking Avast to update Avast4linuxworkstations.
I'm not that familiar with Twitter; however find this post by:
https://twitter.com/avast_antivirus#School IT pros: Want to save money next year? avast! Endpoint Protection Suite is FREE for schools. Apply now!
and you'll see I've asked to have update to Avast4linuxworkstations
See my post ?
My Account.https://twitter.com/avast4_Linux 
You can simply "Open conversation" on my account tweets' it seems and the "School IT pros:" tweet will open.
Help me out if you want the Avast company to update Avast4linuxworkstations. They can only ignore us, but the greater public will be educated that there is a Linux Avast scanner, and how old and outdated it is

Regards,
Abraxas.
I'm outa here, lol