It sounds like it's on the roadmap. From the article: > As we move to support additional features the Signal community has asked for – like addressing that isn

It sounds like it's on the roadmap. From the article: > As we move to support additional features the Signal community has asked for – like addressing that isn’t based on phone numbers and chatting with contacts that aren’t saved in an address book – it means that more and more of this important supporting data can also be lost.