Looks like he's beginning to grow up a bit. Yugi did the same thing I notice. It's less obvius in the anime but really clear in the manga that Yugi not only grew mentally but in body. Juudai is doing the same thing. I think that's one of the things I like about Yu-Gi-Oh. The cast grows up and start looking better. Even Honda got over that stupid hair style affliction towards the end.
Glad to see the internet problem is looking up. I hope this is an indication that you've got it back!

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If wishes and dreams were grains of sand, they'd fall from the hevens and cover the land.

Yup, I'm back now! It's still rather unstable but it works at least.
And yep, at the end of the 3rd season there was this whole thing about Juudai turning from a child into an adult and he told Shou that he had to "go on a journey" to become an adult. In the 4th season, it appears he's now a lot more grown up in his attitude, if sense of humor is still there, but he seems more snarky now and has a real gown up feel to him.

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Supporting *PokemonRebirthClub