In a press release:

SYFY TO DEVELOP FRANK MILLER’S COMIC BOOK SERIES RONIN AND JONATHAN HICKMAN’S GRAPHIC NOVEL PAX ROMANA AS MINISERIES

NEW YORK – April 30, 2014 – Syfy today announced that it will develop as long-form programming Pax Romana, Jonathan Hickman’s graphic novel about a time traveling clash of ages and arms, and Ronin, based on Frank Miller’s (300) comic book series, about an avenging samurai.

Pax Romana is about a Special Forces team that travels back in time on the eve of World War III to “fix” the future by altering the past. Their destination: Ancient Rome. Roman legions battle modern day attack helicopters, tanks and soldiers, while thought-provoking themes are explored as the leaders of the expedition fight over their vision for civilization. Writers: Matthew Federman & Stephen Scaia (Jericho, Warehouse 13, Human Target). Co-executive producer: Jonathan Hickman. Executive producers: David Alpert of Circle of Confusion (The Walking Dead), Federman and Scaia.  A production of Universal Cable Productions.

In Ronin, published by DC Entertainment, eight centuries after a Japanese Ronin samurai failed to protect his master from a demon, he awakens in a futuristic, nihilistic New York in the body of Billy, a medical experiment. Now Billy/Ronin is chasing the demon, which has reawakened. Both parties want control of a sword with magical properties and will stop at nothing to get it back. Studio: Warner Horizon.

Source: ©2014 Syfy, a division of NBC Universal. All Rights Reserved.