I recall there being various discussions where the point about multiple sapient species has come up. I can’t find any right now but to quickly summarize: due to timescale differences it would be extremely unlikely for it to be possible for multiple sapient species to exist at once through naturally evolving. Once one species starts a civilization they’ll be in space in 10 000 years whereas that gives evolution almost no time to work with for another sapient species to appear. So this is such a niche thing that I’m going to say it is not going to be a primary feature in the game, and won’t be added unless someone really wants it and programs the entire feature themselves.
Also kind of related:
And finally please name your threads about the actual topic they are about, not just a general “a question” style of title.