This is very exciting, @stevenjose ! It looks like it’s not quite live for all EN accounts though. I have not been able to set this up as an option for any of my EN accounts with Pricing Plans.
I look forward to trying it out when it’s ready, and I hope Coupons will expand to Store Products Subscriptions & Online Programs. It would also be nice to know if the option will appear in the Coupons dashboard to set up, instead of what appears to be the only option: Pricing Plans > More Options.