please, please, please test thoroughly! i have had a v17 license for a year now but have not been able to use it out-of-the-box to deliver accessible courseware due to issues with tab order (for keyboard-only users) and reading order (for screen reader users). i’ve got tickets in, even for v17.1.1, and could add custom code workarounds, but i’m still using v16.2.2 which is a much better tool for creating accessible content. i feel like i wasted a year of maintenance.
i, too, am a long-time Lectora user so i really hope future versions are worth the investment.