Joooo, I kind of hope Avast folks keep the current version and when the new beta is in early stages, they invite you as a beta tester as early as possible, secret from us.

That will make you happy maybe?
So we keep using what is stable and working fine, that is most important

Anyways I would not expect any radical changes in the user interface and such when going to 4.7. What will be new in it, will sure be behind surface, so to say.