Series TV Magazine (French magazine) has published 5 pages about Person Of Interest in their February-March issue.
Mainly spoilers about S3 (in France we watch S2).
There’s an interview of Jonathan Nolan who talks about Carter’s death, why they have decided to kill Taraji’s character. He also talks about the kiss between Reese and Carter and the fact he already knows what will happen to each character in the future. Jonah also talks about a rumor about a possible spin-off around the character of Shaw but he says he already has a lot of work on Person Of Interest and he and Greg Plageman haven’t explode all the questions about POI yet even if “This show is not made to last 400 episodes”. So no spin-off about Shaw !