But seeing as Miller didn’t lay out concrete details for his final appearance on The Flash, it’s always possible he could be appearing as some other variant of Snart such as Citizen Cold, or maybe he’ll be playing the original Snart in a flashback or time-travel scenario.
This is pretty good news, since Wentworth Miller’s announcement about leaving had many assuming he had finished all his filming for the Arrow-verse.
Now, with Miller getting at least one more episode of The Flash to get through, the world will get another opportunity to see him step back into the cold-thwarting suit, presumably as some version of Leo Snart.