Warning: Potential spoilers ahead, for fans of the TV show and "Walking Dead" comic book readers.

There's no lack of great TV coming our way this summer — the final episodes of both "Dexter" and "Breaking Bad," for instance — but that doesn't mean October, when the fourth season of "The Walking Dead" will premiere, is far away.

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With the cast and crew of "The Walking Dead" back in production for more than a month now, info on the new season is dribbling out, so here, our guide to everything we know about Season 4 so far:





1. Best. Season. Ever?





In a new production video from AMC that teases plans for Season 4, Greg Nicotero, producer, director, and makeup guru for the series, promises the premiere is "bigger than any script we've ever done before."





2. Fresh Blood





New series show runner Scott Gimble wrote the season premiere (which Nicotero directs). Gimble is responsible for some of Season 3's best episodes, including "Clear" — in which Morgan (Lennie James) returned — one of the best episodes of any drama series last season.

[Related: Lennie James on His Surprise Return to 'Walking Dead']





3. And a Friend of the Governor's … Might Not Be a Friend to Anyone Else





The biggest cast addition for Season 4 is Larry Gilliard Jr. as Bob Stookey, a former Army medic. Gilliard, best known for his role as D'Angelo Barksdale on "The Wire," will be reunited with former "Wire" co-star Chad Coleman, who plays Tyreese.

Stookey, described as a charming loner who's still haunted by his actions before and after the zombie apocalypse, is a character from the "Walking Dead" comic series. In the comics, he's a 50-something Caucasian who lives in Woodbury, where his fellow survivors worry about his frequently drunken state. But, using the medical skills he learned in the Army decades earlier, he saves the Governor's life after the Woodbury leader is attacked by Michonne, and the two become friends.





4. He's Baaaack!





David Morrissey will return as the Governor, while Emily Kinney (Beth Greene), Coleman, and Sonequa Martin-Green (as Tyreese's sister Sasha) have all been promoted from recurring status to main cast status for Season 4. Jose Pablo Cantillo and Travis Love — who play Governor sidekicks Caesar and Shumpert (aka Bowman) — will return as recurring characters, as will Melissa Ponzio, who's going to stir up some trouble as Karen, the outspoken Woodbury resident now living with Rick's people at the prison.

[Related: Who Died and Who Survived on the Season 3 'Walking Dead' Finale?]





5. Rick's Got a New Attitude





Series creator Robert Kirkman told the Hollywood Reporter that we're going to see a very different, more community-minded Rick Grimes (Andrew Lincoln) in the new season. "Rick is changing. This is the moment where Rick takes a turn; he's no longer going to be pushing people away, he's no longer going to be doing whatever he can to protect these people in ways that hurt other people," Kirkman said. "He's not going to be the guy who would leave that guy on the side of the road — the backpack guy in ["Clear"]. He's letting the people of Woodbury in and trying to tell Carl that these people are like us, you have to be open to this, and the only way to survive in this world is to have people and be in a community. That's going to be a big part of Season 4."





6. Father vs. Son?





But while Rick is embracing his fellow survivors and the importance of banding together to keep surviving the undead (and other survivors), son Carl (Chandler Riggs) has seen so much death, destruction, and personal loss that he seems to have turned to the dark side, something that's going to pose a big challenge for Rick in Season 4.

"Rick's got his work cut out for him. He's aware of this, and he sees what allowing his son to become a child solider has brought, which is a very big part of season four," Kirkman told TV Guide. "Moving forward in the show, this is a guy who's working as hard as he can to maintain a life for this child. [In] the process of surviving … he's allowed his son to lose a pretty substantial piece of his humanity. It's now a question of: Is there going back? Is this now status quo? These are the things that a father will have to deal with."

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