Hi Rudolf,
This is pure speculation on my part, but i believe it will be supported in the next SEDR release. The agent itself supports it as it is available if you run EDR in the cloud. The latest roadmap i have seen stated EDR On-Prem horizontal scalability function in Q1 of 2021 and this kind of feature most certain requires a major upgrade which will probably also add support for EDR in Linux.
/Andreas