I just talked with Jim. Dynamic Lists are currently under development and expected to go Beta soon. Usually, when a new feature goes beta they will open it up to customers who request access. I would direct message @Rebecca_Owens, the product manager for the Architect team if this is a feature you are interested in.
Thanks,
John Carnell
Manager - Developer Engagement
I will be running the beta. If you send me your org ID and region I can add you to the beta when it opens within the next couple of weeks. My email address is nicola.burns@genesys.com.