[Temis the Vorta]

Showtime says the show will probably end with S8.

And this is just what I've wanted to hear - there's a definite end date and a plan for getting there:

"The biggest question was: what is the trajectory of the show creatively? And after speaking with (executive producers) John Goldwyn, Sara Colleton and Scott Buck, it became pretty clear that there was a very clear 3-year trajectory. Once we established that, this became a very simple negotiation, which went down pretty quickly.” The 3-year trajectory includes the current sixth season and the upcoming Seasons 7 and 8. Does it mean that Dexter will end after eight seasons? “I’m not going to say with absolute certainty that this is the end, but that is the likely scenario, that the series is moving towards a definite end,” Nevins said.