It seems they just put that into the RPC yesterday. Although I don't personally think it's a good idea. I think payments in coinjoins will always have bad UX unless a proper P2EP is implemented, and everything that doesn't bring towards making the average Bitcoin user use Bitcoin privately by default is a distraction. But anyway, I'm not there anymore and even when I was I wasn't able to keep the project on track and kill all the advanced feature requests so all I can do now is to bitch about it on nostr😅 

https://github.com/WalletWasabi/WalletWasabi/releases/tag/v2.3.0.0 

 Thanks for the info, I saw that it was included in the new version.