It seems to be work, but with a lot of effort and not a good experience: https://github.com/Hypfer/Valetudo/discussions/854#discussio...

It’s unofficially supported. I have it set up, connected to home assistant and it works great. Only thing I’ve noticed that is missing is the carpet detection feature, so just make sure you have the carpet set in the Roborock app before you root it. Buttttt it’s a huge pain in the ass to root. You pretty much have to take apart the entire robot, thus voiding your warranty, to do it. There are some guides, but not many, online on how to do it. All in all, 100% worth it. But be careful because I’ve seen people break/loosen a wire when taking the robot apart making it a really expensive paperweight Edit: I’m not sure about the auto empty. I just have the regular S7.

It's not listed on the website, however there is a link to another site which says the S7 can be rooted [0].

You'll probably have to do the more involved shell replacement to get root and flash the firmware.

0: https://dontvacuum.me/robotinfo/detail_roborock.vacuum.a15_0...

Thank you all for the replies!