The Triuimph I know has a cigar bar, however on the Pride (Miracle's older sister) you can only smoke cigars outside on the open decks, but only on one side....port (left facing front) side I BELIEVE but don't quote me.
It's not just the new ships. The Fantasy had a cigar bar and I've heard other ships do as well.
CarnivalSensation February 2015
Carnival Dream November 2015
Carnival Fascination April 2014
Carnival Elation March 2011
Carnival Imagination Sept 2007
Carnival Sensation Dec 2006
RCI Sovereign of the Seas Sept 2006
Carnival Miracle Sept 2005
Carnival Glory Sept 2004
Carnival Fantasy Jan 2004