Hi Jack,

This is Kevin from the product team here. Thanks for your question in our portal!

I have been tracking requests for CosmosDB closely and it is on of our more commonly requested new connectors. We don't have a concrete plan for it yet, but it should be one of the next new database connectors we have in our roadmap. Please stay tuned for updates. Also, we have another post that we are using to track CosmosDB, please be sure to upvote this one so we can track your request more easily!

https://support.fivetran.com/hc/en-us/community/posts/1500000711721-New-Connector-Azure-Cosmos-DB-Connector-request