NBC reports that a single “New Russia” flag is “slowly replacing” the individual flags of various pro-Russian Ukrainian separatist groups. The flag of New Russia, or Novorossiya, has been around for a few months; it's pictured above in a photo from July. And it looks a lot like another flag that you may associate with armed rebellion:
The Moscow Times reports that similarities to the Confederate flag are apparently not intentional. They located the Ukrainian insurgency supporter credited with introducing the design; he says he merely found it—in the Times' words—“online somewhere.” And in such a manner is the course of history determined.