They may be HD triplets for a year or so, but once the new Xbox and Playstation arrives I wouldn't be surprised if they call the new consoles something like
the Graphics Twins
the Hardcore Twins
the Third Party Supported Twins
the Actual Next-Gen Twins
or perhaps the Blue Ray (BR) Twins
They will do anything in their powers to make it appear as if they belong to different generations and markets. Mark my words.