Sam said on the stream tonight there are no releases scheduled until after the next roadmap, so it’s going to be at least two weeks yet.
Looking at the new roadmap I'd guess it's February 4th or 11th. Releases are almost always on Thursdays. I support any delay that results in better quality, given the state the world is in right now.
Next roadmap is 26th Jan First possible release date 28th Jan (assuming the usual Thursday release) This is not a prediction that the 28th will be the release date but it is the earliest it could be.
For me the first possible release date would have been February 4th, they currently have to polish and sort out the final details, they have to prepare the communication, the trailers and update the game to prepare for the release of the SEHS line.
Presumably they'd want to stick it on next release then so some preview streams, so maybe it's be on the 26th Roadmap, then a preview stream on the 28th, and the actual release on the 4th of Feb?
Possibly the 28th of this month... The DLC is in it's final stages of development so I can imagine they're just doing tests and finishing off with the livery designs. The last roadmap was still upcoming so I guess we will see it on the Thursday after the next roadmap.