Earlier today, Justice League and Justice League Part 2 director Zack Snyder shot down rumors that Warner Bros. may delay the two-part movie, confirming that production is scheduled to begin April 11 at Leavesden Studios in the U.K. For those who want even more proof, the director took to his Twitter page earlier today, sharing a new photo with Justice League and Aquaman star Jason Momoa at Leavesden. The most intriguing part of the photo is in the background, which offers an early look at the full Aquaman costume, along with The Flash suit and what could be the costumes for Mera and Nightwing. There is also a painting of Mera propped-up on the floor.

We've known ever since Warner Bros. announced their full DC Comics slate in 2014 that Ezra Miller is playing The Flash, but we still haven't seen our first look at the official costume yet. We did get to see concept art featuring the costume last month, but it remains to be seen when we'll get our first look at Ezra Miller in costume. As for Aquaman, Zack Snyder gave us our first official look at Jason Momoa last February, but we still have yet to see his full costume, until now.

We reported last month that Amber Heard is in talks to play Mera in both Justice League Part 1 and Aquaman, but it isn't known if she has officially signed on. Just below The Flash costume in the background, there is a portrait of what appears to be concept art of Mera, but we don't know for sure. The character is described as the "Khaleesi of the sea," borrowing a term from HBO's Game of Thrones, which Jason Momoa used to star on. As for Nightwing, this character hasn't been confirmed for any of the DC movies, and we don't know for sure if that's his costume either.

All of the Justice League characters are said to be introduced at the end of Batman v Superman: Dawn of Justice, with Aquaman, The Flash and Cyborg (Ray Fisher) uniting with Batman (Ben Affleck) Superman (Henry Cavill) and Wonder Woman (Gal Gadot). The studio still hasn't cast anyone for Green Lantern Corps. yet, but that movie is expected to feature a number of different Green Lantern's, including Hal Jordan and John Stewart.

Justice League Part 1 will also be shot on location in London and Iceland, but sadly no plot details have surfaced quite yet. Of course, next month's Batman v Superman: Dawn of Justice will set the table for this two-part adventure, and it's surely no coincidence that filming will begin after Batman v Superman: Dawn of Justice hits theaters on March 25. While we wait for more on Batman v Superman: Dawn of Justice and Justice League Part 1, take a look at this intriguing Justice League Part 1 photo below.