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The photo, which we thankfully screenshotted before it was removed from Instagram, shows Hardy standing in front of - we can assume - the film's crew.
Along with a series of emojis - including the UK and US flags, a heart and a pirate flag - he wrote: "V2 wrap."
Now, however, the image has been deleted, which is a move Hardy's got a bit of a history of doing.
Hardy - who starred in the first Venom film as journalist Eddie Brock, who gains superpowers after becoming bound to an alien symbiote - has shared photos from the set several times, only to swiftly delete them.
Last November, two other on-set photos appeared on his Instagram account that never became permanent additions to the grid.
One with a dog was captioned 'first day at work good luck mate' and one of him sat in a chair with a woman behind him and the caption W3'R'V3N0M2 day one'.
But as quickly as they popped up, they were very suddenly deleted.
Although the snaps were swiftly removed, a bunch of eagle-eyed fans had already screenshotted the pictures and shared them on social media, in turn building the hype for the film very nicely.
While Hardy's keeping us (kind of) in the dark about things, what we do know is that he's confirmed to return for round two - this time alongside Woody Harrelson, who is set to star as another symbiote named Carnage.
We also know the film is probably going for an R-rating, as opposed to the PG-13 of the first movie.
Venom producer Matt Tolmach revealed that Venom 2 will be considering an R rating, using Joker's recent box office success as an example of audiences responding well to such films.
In an interview with CinemaBlend, Tolmach said: "I mean, I think you always have to think about [it], now that that works. Having said that, our movie worked really well.
"Our franchise exists as it is, and I don't think anybody is looking to just say, 'Hey, they [did it]!' We have a place in the world. So it isn't like suddenly everybody's considering what to do with the rating.
He added: "I think what Joker does is it tells you that you can succeed. For a very long time, that was the narrative. And Deadpool sort of wrestled that to the turf, and then Logan, but for a long time, that was considered totally forbidden.
"So you know, I think it's the greatest thing in the world that R-rated movies are being embraced by massive audiences. And it just means that there are more opportunities for that kind of storytelling."
Whatever rating it eventually gets, you'll still have a bit of a wait yet, as the film is currently due to be released on 2 October 2020.
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