There have been lots of articles strongly indicating this possibility for 30 Rock all week. Community and P&R's inclusion always seems like an afterthought. Like an idea being kicked around that they haven't made their mind up about yet.
If you look, this one is dated 2 days ago.
Frankly, it doesn't make sense for P&R at all. It's handily their 2nd best sitcom and 3rd best scripted show (ratings wise, I mean).
(Also, canceled =/= renewed for final season).
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"One toot on this whistle will take you to a far away land."
-Toad, SMB3