Parks and Recreation co-creator/showrunner Mike Schur gave an interview to EW about the future of the series, and he said that he expects next year to be the show's last, although no decision has been made:
“We haven’t talked about it with NBC officially, but for many reasons — mostly just creatively in terms of where we’re building to this year — it would be natural if next year were the last year. I mean, you never know. We thought season 3 was our last year … No decision has been made on that, but it wouldn’t surprise me if next year were the final season.”
Parks and [...]
30 Rock was still 30 Rock last year but just with a little bit more heart. Heading into its final season, showrunner Robert Carlock told Entertainment Weekly he's excited to reach some sort of fulfilling conclusion for Liz.
We had started a few years ago this idea that Liz, in her total quest for happiness — whether that’s possible or not, which I don’t think we’ve answered yet — wanted to have a family. Back in the day, we weren’t sure we’d be around next week. It was fun to know that, ‘Okay, now if we’re heading toward some sort of endgame for the characters or for the series, [...]