Question: If there is a Toy Story 4, which actors have reportedly signed up?
About the article "Toy Story 3", section "Possible sequel".

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According to an article on NOLA.com, "Toy Story 3" director Lee Unkrich has confirmed that a "Toy Story 4" sequel is not being planned.
"Well, we don't have any plans for "Toy Story 4"," Unkrich said.
"I'm flattered that people ask about it—it reminds me how much people love the characters, but it was really important to me with this film that we not just create another sequel, that it not just be another appendage coming off of the other two."
Unkrich went on to say, "there may be opportunities for Woody and Buzz in the future, but we don't have any plans for anything right now."
It has also been reported that Hanks and Allen have signed on for a "Toy Story 4" if Pixar ever decides to produce one.
In a BBC interview in 2011, Hanks said that he thought Pixar was working on a sequel.
Disney denied the rumors saying, "nothing is official."
According to an article on NOLA.com, "Toy Story 3" director Lee Unkrich has confirmed that "Toy Story 4" is not planned.
"Well, we don't have any plans for "Toy Story 4"," Unkrich said.
"I'm flattered that people ask about it—it reminds me how much people love the characters, but it was really important to me with this film that we not just create another sequel, that it not just be another appendage coming off of the other two."
However, he did say, "there may be opportunities for Woody and Buzz in the future, but we don't have any plans for anything right now."
It has also been reported that Hanks and Allen have signed on for a "Toy Story 4" if Pixar ever decides to produce one.
In a BBC interview in 2011, Hanks said that he thought Pixar was working on a sequel.
However, Disney has since denied these rumors saying, "Nothing is official". 
This is a list of characters from Disney/Pixar's "Toy Story" trilogy which consists of the animated films "Toy Story" (released 1995), "Toy Story 2" (1999), and "Toy Story 3" (2010). 
Initially, when "Love Story 2050" was announced in 2004, Kareena Kapoor had signed on to play Priyanka's role, for which she was reportedly paid Rs.30 million.
Kapoor later opted out in 2006 saying she had some date problems and was replaced by Chopra.
"Love Story" is Bollywood's first futuristic film and had 1200 special effect shots, the most ever in India.
The budget – Rs.500 million – is high for an Indian movie.
The special effects were executed by four international firms.
Two special effects houses — Weta Workshop (New Zealand) and John Cox (Brisbane, Australia) — have won an Academy Award for their work on international projects.
Along with lead actors, Harman and Priyanka, a robot was seen playing a major role; viewers also get to see a teddy bear which appears to be more than a toy.
Lead actress Priyanka Chopra played a double role so she coloured her hair twice: once red to portray the girl from future and then again black.
The red-haired look is inspired from Harman Baweja's sister Rowena Baweja's painting which portrays woman of today and tomorrow.
The script of "Love Story 2050" inspired her to do the painting.
The first trailer of the film was shown on 21 March 2008 at the premiere of "Race". 
In 2011, Pixar started releasing short animated films to supplement the "Toy Story" films, called "Toy Story Toons".
The shorts pick up where "Toy Story 3" has left off, with Woody, Buzz, and Andy's other toys finding a new home at Bonnie's.
So far, three shorts have been released; "Hawaiian Vacation", "Small Fry", and "Partysaurus Rex".
Another short, titled "Mythic Rock", is also in development.