Here's Cisco's employee's response: https://community.cisco.com/t5/devnet-sandbox/possible-to-bringup-new-vedge-within-cisco-sd-wan-sandbox-cml/m-p/4481823/highlight/true#M6726 - "it hasn't been removed - just suspended for some unplanned work."
No, CML also dissapeared in devnet sandbox labs search, so there's no such an option. Anybody knows why is that? Yesterday I was able to find it in devnet and reserve, connect to it and get the job done. Now it doesn't exist :/...