The whole concept of time is a little more flexible for "Outlander" fans, but you can count on this: Season 5 of the time-traveling historical romance series will premiere on Sunday, Feb. 16.

And the good news doesn't stop there. Starz has leapt into the future itself by already renewing the show for a sixth season as well -- in fact, it picked up the fifth and sixth seasons before Season 4 even debuted, such is the faith it has in this one.

Of course, that's not new. The cable channel did the same thing a few years ago, issuing a renewal for the third and fourth seasons simultaneously.

And at the moment, there's no reason for Starz to not continue this for quite a while. The ratings remain strong for the series (they dropped a bit in Season 4, but the show still averages more than a million viewers per episode), and there's plenty more source material to draw from.

The series is based on novels written by Diana Gabaldon, with each season covering one novel -- the upcoming season will (mostly) cover the fifth book, titled "The Fiery Cross." There are three more books already done, and more still to come -- Gabaldon is nearly done work on the ninth and shows no signs of slowing down. 

I say the new season "mostly" covers the fifth book, because some of the stars have hinted it will reach ahead a bit into the sixth.

"I think we're able to say we're bringing in certain elements of the next book," series lead Caitriona Balfe said in an interview with "Entertainment Tonight." "I'm not sure how much I'm allowed to say about that. Some elements, yes."

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