This is exciting news. And since it's going to be on Starz, maybe we'll get lot's more John Barrowman flesh.
Starz has released an official synopsis for the new ten-part miniseries Torchwood, The New World:
When C.I.A. agent Rex Matheson investigates a global conspiracy, he finds himself unearthing a threat which challenges the entire human race.
The answers seem to lie within an old, secret British institute, known only as Torchwood. But Torchwood was destroyed, years ago, and the keys to the institute are held by its only two survivors – former Police Officer Gwen Cooper, who has long since disappeared along with her husband and child, and the mysterious Captain Jack Harkness, a man whose history seems to stretch back centuries.
With Rex under attack from all sides, in both the US and the UK, he soon discovers there are forces at work within every level of society, determined to stop Torchwood's return. As a chain of events across the world links together the most disparate and unlikely individuals – including a surgeon, a killer, senators and CEOs – a new Torchwood team takes shape. But this time, the threat is much closer to home, as they realize that their greatest enemy is mankind itself...
And here's a description of the miniseries's new major character, CIA agent Rex Matheson:
He's 28, the golden boy. Has been, all his life. Harvard education, fast-tracker in the C.I.A., destined for success. Though he's never taken it easy – Rex hustles, seduces and campaigns to get where he is today. He can talk his way into anything, then charm his way out, fast. He's made a lot of enemies, but his friends and lovers would defend him to death.
His choice of career is significant. Someone like Rex could make a fortune in Wall Street, or Hollywood. But choosing the C.I.A. says a lot about him: that for all his swagger, he does believe in justice. And will fight for it.
Slowly but surely, we see him make friends. He's thrown together a bunch of people known as Torchwood, the only people who might have the answer to a global mystery. To Rex, at first, they're a bunch of freaks. Welsh women and World War 2 Captains, what's that about?! But as they race from one crisis to another, dodging assassins, blackmail, corruption and conspiracy, from Washington to Wales and the slums of Shanghai, Rex forges friendships in the heat of fire. He learns to trust his new colleagues. And they realize that this dangerous, dazzling, reckless man is the best friend they could ever have, in a world going to hell.
They frighten us, men like Rex. We wish we were him; we never will be.
The press release also suggests what brought Captain Jack back to Earth is the only thing that possibly could: "his undying love for Gwen Cooper." Which, to be perfectly honest, I had almost forgotten was ever a thing in the series in the first place. [SpoilerTV]