The rumor mill has kicked into overdrive now that Batman vs. Superman , or whatever the Man of Steel sequel ends up being titled, is just months away from principal photography fully commencing.

Batman and Nightwing.

Two separate rumors cropped up today. The first comes from Latino-Review , which claims that actors are being sought for the role of an adult Dick Grayson, the former Robin-turned-Nightwing.The site says they're looking for is "a young John Hawkes type." This actor would reportedly be required to perform martial arts, although the site adds that Grayson would no longer be Batman's crime-fighting partner when this story takes place.Meanwhile, the drumbeat about Wonder Woman also being in the film is growing louder, with Forbes claiming the superheroine is likely to appear in Batman vs. Superman. That came on the heels of a claim made by Schmoes Know that Quantum of Solace and Oblivion actress Olga Kurylenko had tested for the role. Kurylenko also recently starred opposite new Batman Ben Affleck in To the Wonder.

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The Ukranian-born Kurylenko, however, was formally announced just hours later as starring in the horror film Mara, which is scheduled to start filming in May. So IF Wonder Woman is indeed in Batman vs. Superman and IF Kurylenko did indeed test for the role then would her schedule for Mara even allow her to film a role in the Zack Snyder-directed superhero epic, which begins shooting in February?Time will tell if these rumblings our colleagues are hearing pan out. The Man of Steel sequel opens July 17, 2015.