Is next year really the end of '30 Rock' and 'Commuinty?'

According to NBC's network chairman Bob Greenblatt, despite only 13-episode pick-ups for the Emmy winning 30 Rock and cult and critic favorite Community, it does not certainly mean they'll end this season. “We haven’t definitively said that on anything yet,” he said. It had been reported earlier that season 7 for 30 Rock (though I will, even if given a chance to air more episodes, the series will end) would be its last and it will remain on the Thursday night schedule in the fall, while Community will be moved to Friday, teamed with the surprising return of Whitney (Greenblatt noted that the show "has a future and creatively it found itself in the last third of the season”). Community, he says "has its faithful audience and they will follow it to the ends of the Earth. And I really wanted to do something to invigorate Friday because we love Grimm. So I thought, let’s move a show where the audience will move with it. I actually look at the positive side of it, although no good deed goes unpunished.” Asked whether Community creator Dan Harmon will return as showrunner next season, Greenblatt said, “I expect his voice to be part of it,” adding that it is still unclear if that will be in his current role or as a consultant. Greenblatt dismissed the notion that the discussion about Harmon possibly stepping down from day-to-day oversight of the show stems from his ongoing feud with co-star Chevy Chase, saying that there are larger factors beyond that. 

Meanwhile The Office (along with Parks & Recreation) received full-season, 22-episode orders, despite a spin-off being developed by former writer/actor/showrunner Paul Lieberstein with actor Rainn Wilson, who will bring his popular Dwight character into a new series. With it's best seasons creativity behind them, at which point do you just decide it's time to go? Plus, as always, a spin-off is not a guaranteed to succeed.