Believe it or not, "Crisis on Infinite Earths" is about to get even bigger.

A new set photo from the ambitious Arrowverse crossover has surfaced online, and it appears to show a newspaper featuring Michael Keaton's Bruce Wayne on the cover. "WayneTech CEO - Bruce Wayne to Marry Socialite Selina Kyle," the Gotham City Gazette's headline declares.

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Keaton, of course, starred in Tim Burton's cult classic movie Batman. He played the lead role in both the 1989 film and its 1992 sequel Batman Returns, which also featured Michelle Pfeiffer as Selina Kyle, aka Catwoman. However, he did not return for Batman Forever and Batman & Robin.

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By including this newspaper in the crossover, "Crisis on Infinite Earths" confirms these Batman films as part of DCTV's sprawling multiverse. In lieu of tapping a major star like Keaton, this is likely the closest the Arrowverse can get to involving Warner Bros.' DC film universe. Either way, this Easter egg should be a boon to longtime fans.

Considering the headline touts a marriage between Wayne and Kyle, this may also be a reference to writer Tom King's Batman run. After all, Batman and Catwoman very nearly got married in his recent run. Their love story will continue in Batman/Catwoman, a miniseries King created with artist Clay Mann.

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"Crisis on Infinite Earths" has a star-studded list of guest stars. Batman: The Animated Series star Kevin Conroy, Black Lightning's Cress Williams, Batman 1966 star Burt Ward, Legends of Tomorrow's Jonah Hex, The Flash triple-threat John Wesley Shipp and Smallville's Tom Welling and Erica Durance, as well as "Elseworlds" alums Tyler Hoechlin and Elizabeth Tulloch, are among those appearing the crossover. DC's Legends of Tomorrow star Brandon Routh has been confirmed to appear as Kingdom Come Superman.

"Crisis on Infinite Earths" begins Sunday, Dec. 8 at 8 p.m. ET/PT on Supergirl, then continues in Batwoman on Monday, Dec. 9 at 8 p.m. ET/PT and in The Flash on Tuesday, Dec. 10 at 8 p.m. ET/PT. After the winter hiatus, the crossover will conclude on Tuesday, Jan. 14 in Arrow at 8 p.m. ET/PT and in DC's Legends of Tomorrow at 9 p.m. ET/PT.