Yep, pages 404 and 405 mention the second PV, currently in production, and Arthur's going to be in it, voiced by Kokuryuu Sachi.
Here's the full TL of the two texts:
The second PV of 4KoA is currently in production!! We got help from Suzuki Nakaba-sensei with planning and composition despite...
The information has been told on the page margins for a few chapters including this week's.
Here's the text: Thanks to your support, the colors are go in two issues back to back!! Center colors in Issue 49 and lead colors in Issue 50!! The Seven Deadly Sins will appear on the lead color pages...
I don't remember that info either.
Either I forgot about that or it simply doesn't exist.
Edit: I just skimmed the novel and didn't find anything about that, so it's likely the regeneration thing doesn't exist.
By the way, @Zorra_akuma , why did the guy bring up the regeneration thing?
No, couldn't be, it's too early for that. For the reference, NnT got its anime announcement in King's gaiden (ch73.5).
Could be whatever Nakaba was projecting to do (remember the Q/A in the first 4KoA chapter?) or the first poll though.
Actually, Sin used the expression 食人鬼, literally a man-eating fiend.
So kind of like an ogre. Or even a ghoul.
I should add that the term means either a monster or a devil that eats the humans, or a human who commits cannibalism.
Besides, 鬼, oni, means ogre, fiend.