The cover and solicitation for the next issue seem to indicate that it's just Carol Ferris and she's still female.>On the edge of reality, Green Lantern Hal Jordan and Star Sapphire face death by power ring firing squad! Yes, Hal and Carol Ferris reunite (sort of) as they fight their way out of the improbable turn of events of the previous issue! In fact, with what happens next issue, they may not want to survive this one…
My theory is that not everyone on Earth-11 is rule 63, just like how not everyone on Earth-23 is race-swapped. Sometimes it's just two characters' roles that are reversed.
So the joke in the next issue is going to be that Carol Ferris, as Star Sapphire, is actually a major superhero on her world and a staple member of the Justice Guild, whereas Hal Jordan is just her off again on again love interest and occasionally a brainwashed supervillain named Green Lantern.