Doryuzu, and Ishizumai as well, so I don't know if it really means anything. But I see your point, I mean Zuruggu is happening most likely in February, that I guess it would make sense that Iris wouldn't get anything any time soon.
So in that essence, it would make more sense that the egg hatches into Meguroco.
And I here I thought Zuruggu was yellow, not tan or dark orange.Because the color of the egg match
And Oshawott is seen next to Dento in the sketches, your point.and that Iris is shown next to egg in a picture
As Ash6k pointed out, no Zuruggu merchandise at all. Hell it doesn't even appear in those anime like calendar pictures at all. But Meguroco and Kurumiru are. Yep Calendar pictures prove it for me, Iris isn't getting until February or March. I'm sure the egg hatches before then.then next to a Zuruggu in sketches.