The Science Live show are heavily preproduced shows aimed at education it’s possible but more likely that they showed that stuff off the press conference a couple of hours ago.
Here’s a link to one of the team members talking about what they have: https://youtu.be/Xz-Id5ZNopM/l?t=21m40s
From a press release sent a couple of hours ago:
Perseverance’s cameras are intended to capture video of its touchdown and this new still image was taken from that footage, which is still being relayed to Earth and processed.
It’s probably going to be a while I just checked the raw image repo and it’s still just the 3 landing images.
Here’s a more direct answer to your question: https://youtu.be/Xz-Id5ZNopM/l?t=31m56s
To clarify there are actually a couple newly processed images but there’s only one completely new image (actually a frame of the video) of of the landing sequence. 8n the conference they say that more images and the full video are being processed and should be available on Monday.