I saw this in Wiki
Tarantino announced at the 2008 Provincetown International Film Festival that a single film version of Kill Bill with an extended animation sequence was to be released in May 2009. As of yet, no such release has been announced.
Tarantino told Entertainment Weekly in April 2004, that he is planning a sequel:
Oh yeah, initially I was thinking this would be my "Dollars
Trilogy". I was going to do a new one every ten years. But I need at least fifteen years before I do this again.
I've already got the whole mythology: Sofie Fatale will get all of Bill's money. She'll raise Nikki, who'll take on The Bride. Nikki deserves her revenge every bit as much as The Bride deserved hers. I might even shoot a couple of scenes for it now so I can get the actresses while they're this age.
According to Bloody-Disgusting.com, details have emerged about Kill Bill Volumes 3 and 4. According to the article, "Bennett Walsh said at the Shanghai International Film Festival the third film involves the revenge of two killers whose arms and eyes were hacked by Uma Thurman in the first stories," which suggest Sofie and Elle, respectively. The article adds that the "fourth installment of the popular kung fu action films concerns a cycle of reprisals and daughters who avenge their mother's deaths".
Quentin Tarantino said at the 2006 Comic Con that, after the completion of Grindhouse, he wants to make two anime Kill Bill films. One will be an origin story about Bill and his mentors, and the other will be an origin starring The Bride. The latter is most likely to be a prequel, but could also follow the rumored (sequel) plot reported in Entertainment Weekly in April 2004.
On October 1, 2009, it was revealed while being interviewed on an Italian TV Show after being asked about the success of the two Kill Bill films, Tarantino addressed the hostess by claiming "You haven't asked me about the third one" then asking the woman to ask the question would he be making a third Kill Bill film, which he replied "Yes", and claiming "The Bride will fight again!" 
On October 3, 2009, at the Morelia International Film Festival, Quentin Tarantino announced that Kill Bill 3 would be his eighth film, and would be released in 2014. He said he intends to make another unrelated film before that date as his seventh film. He confirmed that he wanted ten years to pass between the Bride's last conflict, to give her and her daughter a period of peace.------