Earlier today, Zack Snyder posted a tease of Jared Leto's Joker appearance in the upcoming Zack Snyder's Justice League due to be released on March 18th, 2021 on HBOMax. The speculation is that this version of Joker appears in the infamous Knightmare alternate timeline that we first glimpsed in Batman v Superman: Dawn of Justice.

A lot of the marketing photos have been geared toward the Knightmare timeline so far, so it appears that we will finally get more story and background of this curious scene we saw in BvS.

What do you think of this tease of Joker? I, for one, like it and think it's the right amount of tease. We get a glimpse to whet our appetite, but not the full reveal. I'm excited for Joker's appearance in this film and hopefully it leads to more of Jared Leto's Joker appearing in more films.

David Ayer (Suicide Squad) retweets Snyder

In addition to this Knightmare Joker, a photo of Deathstroke from this Knightmare timeline has also been released a few weeks ago. Combining these new additions to what we got from BvS makes for an intriguing lineup!

Batman trying to survive the Knightmare that is Darkseid.

Is Superman under the influence of the Anti-Life Equation?

UPDATE:

Later in the day (02/02/21), the film’s MPAA rating was released. According to FilmRatings.com, Zack Snyder’s Justice League will be rated R for violence and some language. Snyder has teased that Batman will drop the F bomb and that Steppenwolf will deliver some grisly deaths as he sets out to conquer Earth.