It’s been a couple of hours since it was revealed that Sensei would be making a special announcement next week, with many speculating on it possibly being a grey puffle.
This seems even more likely now. The Club Penguin Rewritten have released a video which features a grey puffle, check it out.
However, what’s more is that you can actually see the grey puffle on the island itself. Roughly every thirty minutes to an hour, the grey stone statue will crack like in the video at the Dojo Courtyard, and the grey puffle will be visible.