The latest with Season 4 of Ray Donovan has to do with many cast addition announcements. Most recently, it was revealed that Game of Thrones star Richard Brake will be joining the cast.

According to a Deadline report, Brake is set to play a recurring role in the Showtime series. He will be playing the part of Vlad, "a dangerous and intimidating man who works for some very powerful people."

Fans should generally expect to see many interesting new faces and characters in the next chapter of the Showtime series.

Dominique Columbus, who is known for his work in Nine Rides and In Extremis, will play the part of "Damon, described as a street-smart, homeless teen who packs a mean punch and becomes involved with the Donovan family" in Ray Donovan, according to a Deadline report.

This development came at the heels of another casting announcement for the show, TVLine revealed that Lisa Bonet—best known for her work on The Cosby Show—will play the part of Marisol, "an unstable woman with a damaging secret."

Previously, Deadline reported that Ted Levine and Ismael Cruz Cordova are set to come on board in season 4 of Ray Donovan.

The report reveals that Levine will play "Little Bill Primm, the proud owner of a casino in Primm, NV" and Cordova will portray "Hector, a middleweight boxing champion who forms a bond with Ray."

Prior to that, Variety also reported that Revenge alum Gabriel Mann is joining the cast of season 4 of Ray Donovan.

According to the report Mann will appear in three episodes of the season. He is set to play Jacob Waller, "an aggressive attorney who represents high-profile clients."

In disappointing news, Katie Holmes, who mesmerised fans with her portrayal of Paige in season 3 of Ray Donovan, revealed in an appearance on Live With Kelly And Michael that her return was not likely.

Here's what we know about how the character arcs of the old characters on the show will develop.

In an interview with The Wrap, Steven Bauer, who plays Ray's (Liev Shcreiber) right hand man, Avi, on Ray Donovan, talked about how he would like to see his character evolve in season 4.

When asked specifically what he wished for Avi in the next chapter, he said, "I would love to have a personal life, but if that's not in the cards, that's OK too," he said.

In another interview with The Wrap, Dash Mihok, who plays Bunchy Donovan on the Showtime series, hinted at the possibility of Bunchy working with Ray in the next chapter.

"Liev had this plot line, that I loved, but I don't know if it's gonna happen. He had this idea that it would be amazing if I came and worked for him," he said. "I think there would be a lot of humor and hijinks if Bunchy got to work for Ray. But I'm sure that if the fatherhood thing continues, there's going to be a whole struggle thing with being a parent and the way you view your children when you've been abused—you're totally confused and conflicted."

In an interview with TVLine, Ray Donovan Hollander spoke about the possible evolution of Abby (Paula Malcomson) and Terry's (Eddie Marsan) in season 4.

Fans were surprised by the flirtation that ensued between Abby and Terry in season 3 of Ray Donovan and were left wondering if the two might continue to act on their attraction.

Hollander revealed that the two won't actually be taking it forward in season 4. He did confirm that the two had genuine feelings for each other and also that the two being desperately lonely drew them together.

"In talking to Eddie this year, he made it clear to me that a lot of his internal monologue was channeling the voice of Terry's mother—the morality, the center, the judge, the caregiver... So I think Terry was providing comfort and love [to Abby] and that slipped a little toward the loneliness. But it's not a triangulated love story. Terry is not going to steal Abby from Ray," he said. "He will always regret [kissing her]. And, in a way, Terry will perceive what he did as one of the reasons he got shot."

Jon Voight's character arc as Mickey in every season concludes in him majorly wrecked and going down under and MIA. In fact, the finale of season 3 raised similar questions about whether Mickey might be coming back at all in the next chapter. Hollander also assured fans that Voight will be back and that no matter how impossible his return seemed, it was one of the easier characters to write in that regard, as Mickey worked in very unpredictable ways.

"Absolutely. I laugh only because that's the easiest part," he said. "Mickey always wakes up in a new place, and that place feels permanent until it's not. Boston. Mexico. North Hollywood. And somehow, some way, whatever he is doing, it's going to drag him right back into the heart of Donovan land."

Fans are also eager to find out if Katie Holmes will be returning as Paige Finney in the next chapter. Showrunner David Hollander addressed the query in an interview with The Hollywood Reporter.

He suggested that it was likely as the Finney family will still be key to the story, but added that they would need to find relevant angles to make it work.

"I'm never finished with anybody. But her family certainly is not going to be a centerpiece as a plot initially," she said. "If something about it becomes relevant to the story and can be additive and bring up more places to explore, sure. I love those actors and characters."

Season 4 of Ray Donovan will feature 12 one hour episodes.

In August, the president of Showtime Inc., David Nevins, spoke about renewing Ray Donovan and Masters of Sex for another season, saying that they were "proud" of both shows.

"They are emblematic of what Showtime stands for—quality, premium programming that you cannot find anywhere else on television. We're so proud to continue offering both series across all our platforms."

Season 4 will premiere in July 2016.

Watch a preview of the finale of Season 3: