Zack Snyder’s post to Vero was careful to keep anticipation for the Snyder Cut at a high, while also not sharing any of the movie’s mysterious contents. The screen simply has a title card that reads “picture start”, which will eventually be removed when Zack Snyder’s Justice League it hits HBO Max. It’s unclear if sound or visuals are being worked on, and how much of the alternate cut has actually been completed thus far.
The Snyder Cut will be available exclusively on HBO Max, which is currently home to a variety of DC content including Justice League‘s theatrical cut. You can use this link to sign up for the streaming service.