Big news for Doctor Who and Torchwood fans today, as Starz USA announced that the fourth series of Torchwood will launch its premiere episode on Friday, July 8, 2011 at 10pm ET/PT. Starz has also released some new poster artwork for the new series, which you can view here at right. Entitled Torchwood: Miracle Day, the series originally from the BBC, will feature the return of John Barrowman and Eve Myles who will be reprising their roles as Captain Jack Harkness and Gwen Cooper respectively.

New to the world of Torchwood are Mekhi Phifer, Bill Pullman, Lauren Ambrose, Alexa Havins, and Arlene Tur. Phifer is said to have a major role in Miracle Day, portraying Rex Matheson, a CIA agent investigating a global conspiracy behind what could be a serious threat to humanity.

The official announcement from Starz elaborates on the plot of Miracle Day: