What's New in Cisco IOS XE (SD-WAN) and Cisco Catalyst SD-WAN Releases
Cisco is constantly enhancing the Cisco Catalyst SD-WAN solution with every release and we try and keep the content in line with the latest enhancements. The following links includes release-wise new and modified features that are documented in the Configuration, Command Reference, and Hardware Installation guides. For information on additional features and fixes that were committed to the Cisco Catalyst SD-WAN solution, see the Resolved and Open Bugs section in the Release Notes.
What's New in Cisco IOS XE Catalyst SD-WAN Release 17.x
What's New in Cisco IOS XE Catalyst SD-WAN Release 16.x