we recently purchased (a couple weeks ago) 120 avast advanced suite licenses valid for 2 years.
i assume that avast5 will come out later this year since beta testing starts soon
while the program upgrade to 5 without license problems or do we need to pay extra for new/upgraded licenses?
I believe it upgrades.
License applies to ANY upgrade within same edition for as long as the license is valid.
so that means that when avast5 comes out adn my licenses are valid i can install it…
great, thnx 
However, don’t expect other editions (than avast! Home/Pro) to be released in version 5 at the same time as avast! Home/Pro - I’d say it may take some time.
Well, Home Pro are your flagship products so they are top priority.