There's nothing yet as the new hands on labs don't get released until VMworld. Best option today is probably some of the webinars available at http://www.velocloud.com/sd-wan-resources/webinars/ many of which at least include live demo.
HOL ( hands on Lab) for SD-WAN will be released for the USA VMworld 2018. You can access the vault page and get hands on using guided lab (iSIM version)
try out https://vault.vmware.com/group/nsx/sd-wan -- > Technical
Thanks for your information LifeBoySDWAN.
Unfortunately VMware doesn't provide vault access to X employees