Any customer wishing to use Apstra in an environment that previously wasn’t an architectural fit for Apstra data center reference designs should consider deploying 4.1.1 to take advantage of the new Freeform capability.
If you have a topology other than a 3/5-stage, spine-leaf, or collapsed fabric that previously precluded you from adopting Juniper Apstra, you can adopt the 4.1.1 version to gain Apstra capabilities.
Existing Apstra customers can upgrade to gain additional new features, bug fixes, and updates to supported devices and network operating system versions; see Apstra 4.1.1 Release Notes for a complete list.