Earlier today, The Walking Dead executive producer Gale Anne Hurd tweeted a photo from the show's season four wrap party, suggesting that the series has completed principal photography on this year's episodes.
The series will actually wrap production on November 21, according to sources in the area of the shoot. It's likely the wrap party was set a week earlier so that they could get everyone while they were still in town. On a series like The Walking Dead, you don't want anyone conspicuously absent from party photos, or fans will assume the character has been killed.
The party reportedly took place at STATS in Atlanta, where fans have culled photos from Twitter and Instagram showing that at least Norman Reedus (Daryl), Emily Kinney (Beth), showrunner Scott Gimple, Lauren Cohan (Maggie), Melissa McBride(Carol), Michael Cudlitz(Abraham), Brighton Sharbino (Lizzie), Sonequa Martin-Green(Sasha), and Scott Wilson(Hershel) were in attendance.