At TCA today, Showtime entertainment president David Nevins laid out the pay cable network’s scheduling plans for the rest of 2013. The biggest change is the decision to separate veteran Dexter and Homeland, which have been paired since Homeland‘s launch in fall 2011, helping both shows break ratings records. “Dexter has proved incredibly valuable as a launch pad for Homeland,” Nevins said. “Our plan is to harness (the success) and use the shows to launch the next generation of Showtime drama series.”

Related: It’s Official: Showtime Lands Horror Drama From ‘Skyfall’s John Logan & Sam Mendes

Dexter will get on the air earlier than usual, on June 30 at 9 PM, serving as a lead-in for new crime drama Ray Donovan. The early return has not affected production on Dexter. “There is no less production time, just a little less vacation time between the seasons,” Nevins dais, adding that the drama’s producers and cast had gotten enough lead time to adjust to the scheduling change.

On Sept. 29, “we are employing our crown jewel Homeland to launch Masters Of Sex,” Showtime’s new drama about real-life pioneers of the science of human sexuality, William Masters and Virginia Johnson, Nevins said.

Here are month-by-month highlights of Showtime’s original programming slate for the rest of 2013:

JANUARY

Season 3 of SHAMELESS starring William H. Macy and Emmy Rossum premieres  Sunday, January 13th at 9:00 p.m. along with the second season of HOUSE OF LIES followed at 10p.m.,  and the sixth season of CALIFORNICATION at 10:30 p.m.

FEBRUARY

Barbara
1 year
Anyone who disses Homeland is probably into the crummy reality shows saturating tv. Can't wait til it's...
Debbie
1 year
Can't believe you dropped the Borgias! and left everything hanging like that. So much more to them!...
Ama
2 years
I love homeland and will watch regardless of what's before it.

INSIDE COMEDY will premiere season two of its critically-acclaimed documentary series on Monday, February 11th at 11 P.M.  The ten, half-hour episodes will feature David Steinberg along with a line-up of comedy luminaries including Louis C.K., Steve Martin, Tina Fey, and Will Ferrell.

MARCH

THE WORLD ACCORDING TO DICK CHENEY premieres Friday, March 15th.  From Emmy winner R.J. Cutler (The September Issue), who spent a great deal of time with former Vice President Cheney, and with his full support, delves into his life and career. Includes original interviews with his family and Donald Rumsfeld.

APRIL

NURSE JACKIE Season Five starring Emmy® Award winner Edie Falco, will debut on Sunday, April 14th, at 9 PM.  A repeat of the premiere episode of Nurse Jackie will air at 9:30 PM; followed by the third season debut of THE BORGIAS at 10 PM, starring Oscar® winner Jeremy Irons in his Golden Globe® nominated role as Pope Alexander.

Moving to Mondays, THE BIG C: hereafter will conclude with a four-part limited event series on Monday, April 29th at 10 PM, starring Laura Linney in her Golden Globe® Award-winning and Emmy®-nominated role as Cathy Jamison.

JUNE

The eighth season of the network’s award-winning drama, DEXTER will be moved up to a summer premiere, and will be the springboard for the highly anticipated series premiere of RAY DONOVAN on Sunday June 30thDEXTER will premiere at 9 pm followed by RAY DONOVAN at 10 pm.

SEPTEMBER

Season Three of the Emmy® and Golden Globe® award winning drama series HOMELAND will return this fall on Sunday, September 29th at 9 pm followed by the premiere of the new drama series MASTERS OF SEX at 10 pm.