Tech Preview features are considered complete and ready for use but are made available on a preview basis so customers can get early access before a broader rollout to all customers.
Tech Preview features may only be available in selected geographic regions.
For details about terms of use, see Accelerated Revit Graphics Preview Terms of Use.
For information on other Tech Previews that may be available in Revit LT, visit the Revit LT blog and search for "tech preview".