It looks like Batman and The Flash will be crossing over in April, according to a press release sent out by DC. In a four issue storyline called "The Button" that will apparently run through Batman #21 and #22 and The Flash #21 and #22, Flash and Batman will team up to investigate the mystery of the bloodstained button from Watchmen found in The Batcave. The press release promotes the crossover as the next stage in the story started by Geoff Johns' DC Universe Rebirth #1, and implies it will lead into a larger story.
"What begins as a simple investigation soon turns deadly when the secrets of the button prove irresistible to an unwelcome third party – and it's not who anyone suspects! This is a mystery woven throughout time, and the countdown starts here!"
We know that DC is planning a big Summer Batman event from Scott Snyder and Greg Capullo, but that event has been described as fun and not mired in continuity, which doesn't sound like an event bringing The Watchmen into the DCU. Could it be something else?
More importantly though, the press release reveals that all four issues will feature "special lenticular covers." The 3D lenticular covers used for DC's Villain's Month/Forever Evil event, the first super-mega-crossover event of the Nu52 reboot, turned into a disaster, known as the 3Dnado, when lenticular material shortages led to allocations for comic book stores. Well, a disaster depending on your perspective, we suppose. If you managed to get the covers, you could have made a lot of money on ebay… as long as you didn't leave them in your car with the windows closed, as they were also known to melt. The original 3Dnado was one of the most frequent causes of resets of the Has DC Done Something Stupid Today counter in history.
The regular creative teams of Batman's Tom King and Jason Fabok and The Flash's Joshua Williamson and Howard Porter will write and draw the crossover in April. While the regular issues will hold the line at $2.99, the lenticular covers, drawn by Fabok, will be $3.99.