The announcement was made at the Television Critics Association summer press tour in Beverly Hills, reported E! online.
The premiere of the sixth season has been pushed to January 15, 2017.
With the US presidential election happening later this year, the makers are careful not to be "counter-factual" or "irrelevant".
"This year we're sort of hedging our bets in terms of our president. Although she (president) is a woman, she's a little bit Hillary Clinton, a little bit Donald Trump, and a little bit Bernie Sanders," said showrunner Alex Gansa.
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"We talked a lot about the Iran nuclear deal, because a lot of that business gets conducted in New York City in terms of the sanctions and banking. That's a fairly big part of the show.
"And also, frankly, about how law enforcement in this country is treating the Muslim community right now, and how they've been treating the Muslim community since 9/11. There are some very strong feelings on both sides of that issue, and it's an issue that Carrie's character will be very, very involved with," Gansa added.