To add more clarity here - we did not complete the development of the Forms A/B testing feature and it was never in the beta testing stage. We had to drop this before the development was fully done to address other priorities. I hope that clarifies.
@PaddyBlocks Thank you for your inputs. Yes, we would definitely like to revisit building Forms A/B testing feature later. We are not actively pursuing it now in order to focus on other feature improvements.