Oh, a game ! I like guessing, so I'll play

.
Because AlamoSoul said it "very close" to
Shrek "in some way", I'll say
Kung Fu Panda (it's basically centered on a Shrek-like character + takes place in China). Not steelbook material to me, and I don't like that it's the first film of a franchise without other steels (unless HDZeta follows up with
Kung-Fu Panda 2, we're not likely to have that one), but that's what I gather from the clues.
Or it could be
Puss in Boots, it's extremely close to
Shrek since it's a spin-off. Again, not one I'd pick to follow
Lawrence of Arabia, and it'd be odd to have that one when there are no
Shrek steelbook.
So I took out my list of animated films (I have one of those, yeah) and I ruled out :
- Any Disney/Pixar animated film.
- Any Japanese animated film.
- Any French animated film (for the past 12 years or so we've been making great animation

).
- Any "dark" animated film (the awesome
Waltz with Bashir or
Mary & Max for instance).
- Any sequel (that's common sense).
- Any animated film released prior to 2001 ("the 21st century").
- Any animated film that was a real box-office disappointment.
- Any animated film that already has a steelbook.
Thus if Alamo's info is correct and I made no mistake (I usually don't), HDZeta Exclusive #2 is among them :
- My wishes (post-2000 animated films) : How to Train your Dragon or Fantastic Mr Fox.

- Suspect #1 : Kung-Fu Panda (Po is like Shrek, and it's set in China, much like HDZeta).
- Suspect #2 : Puss in Boots (it's a spin-off of Shrek, you can't get closer than that).
It's either of these four, or it's either one of the ones below (in bold are the most financially successful) :
- Ice Age.
- Spirit: Stallion of the Cimarron.
- Sinbad: Legend of the Seven Seas.
- Shark Tale.
- Madagascar.
- Wallace & Gromit: The Curse of the Were-Rabbit.

- Robots.
- Over the Hedge.
- Flushed Away.
- Happy Feet.
- Surf's Up.
- Bee Movie.
- The Simpsons Movie.

- Dr. Seuss' Horton Hears a Who.
- Monsters vs. Aliens.
- Cloudy with a Chance of Meatballs.
- Legend of the Guardians - The Owls of Ga'Hoole.
- Megamind.
- ParaNorman.
- Rise of the Guardians.
AlamoSoul says it hasn't had a Blu-ray steelbook before, implying it could have had a DVD steelbook, so I'd wager that this film was done before 2009 at least

.
My money is still on
Kung-Fu Panda (again, there are better choices imo).