This has always been true although we may not have enforced the forum verification as strictly as we have the past 2 years. This wording has never change on our pages since the beginning of Photopost.
One owned license grants you the right to run one software installation on one domain for an unlimited time, and purchasing an owned license gives you access to our members download area and support for one year.
So yes to access the product support forums you would need to renew members access. You can access the forums you just cant post for support or see verified member content without renewing.