Yesterday, fans got their first look at The LEGO Batman Movie with photos featuring Will Arnett's title character. We also reported yesterday that the trailer is debuting Wednesday, March 23. Thankfully, we have something else to tide us over today. Earlier, Will Arnett took to his Twitter account, to unveil the official poster.

Unfortunately, the poster doesn't give us a look at LEGO Batman himself, or any other characters from this upcoming animated movie. The one-sheet does give us a glimpse at LEGO Batman's Batsignal, which even includes a glimpse at the Gotham City skyline embedded in this insignia. Hopefully we'll get to see more of this LEGO version of Gotham City itself when the trailer debuts tomorrow.

Will Arnett voiced the mini-fig version of Batman in The Lego Movie, which went on to become a box office hit, taking in $257.7 million domestically and $469.1 million worldwide, from a $60 million budget. That movie's success lead to Warner Bros. announcing a number of spinoffs, with The LEGO Batman Movie arriving first next February, followed by Ninjago (September 22, 2017) and The Lego Movie Sequel (May 18, 2018). Will Arnett returns to voice Batman in this animated sequel, and this time he's joined by a new supporting cast.

The story centers on Batman's solitary life in the Batcave and the only meaningful relationship in his life, with his butler Alfred (voiced by Ralph Fiennes). The plot thickens when Batman's world is upended by the arrival of two sidekicks, Dick Greyson, a.k.a. Robin (Michael Cera) and Barbara Gordon, a.k.a. Batgirl (Rosario Dawson). Director Chris McKay, who served as the animation director on The Lego Movie, teased yesterday that several other well-known superheroes will be featured in cameo appearances, although he wouldn't mention any characters by name.

The director is still in production in Australia, creating an intricate LEGO world for this beloved superhero. The director teased they're building an "entire city, the Batcave and vehicles," and they're going "deep into Batman's world." The voice cast is rounded out by Zach Galifianakis as The Joker and Mariah Carey as the mayor of Gotham City. Check out the first poster for The LEGO Batman Movie below, and be sure to check back on Wednesday for the first trailer.