In addition to returning shows United States of Tara, Nurse Jackie, Weeds and Dexter, Showtime is readying The Borgias (a period drama starring Jeremy Irons), Episodes (A BBC co-produced comedy with Matt LeBlanc playing himself) and another middle-aged actress vehicle, The Big C (a cancer comedy starring Laura Linney).
Of course, similar to the situation that sees Showtime favorites like Dexter available on Netflix in Latin America but not here in the States, it doesn't make it any more likely HBO will suddenly become cord-cutter friendly at home -- this is an international deal only.