I saw an article from Kotaku by Owen Good about the 3DS version of Skylanders. It features Ben Throop from Vicarious Visions showing the 3DS connecting to the portal using the console’s infrared port. Did you know that Vicarious Visions also made portable versions of two other games TFB made: Disney’s Extreme Skate Adventure for the GBA and Tony Hawk’s Downhill Jam for the DS. The DS version of Downhill Jam did have multiplayer capabilities but is no longer available because the THDJ servers have been taken down.
In Owen’s article, he mentions that this version of Skylanders will be significantly different from the other versions:
If the 3DS isn't the lead platform for the game, per se, it certainly has the coolest implementation of Skylanders' signature feature. The handheld version of the game also differs from the console in that it's set off in a different realm, facing down a different force of darkness.
It's also a bit more of a traditional platformer, drawing on Vicarious Visions' experience with the Crash Bandicoot series. Intriguingly, the developer also said that the Tony Hawk franchise served as a model for level design, in that the designers wanted to offer multiple tasks in each board, such as scavenger hunts, races and collection challenges.
‐ Owen Good, Kotaku.com, "Pulling Action Figures Into a 3DS with Skylanders: Spyro’s Adventure"
After some reading, I think it’s safe to say it’s confirmed that Toys for Bob dedicated their work to the Wii version of Skylanders while other dev studios worked on the other versions. With Activisions goal to spread across as many platforms as possible, expect more developers to port Skylander’s to other consoles such as Android, iOS, Blackberry OS, Mac OS X and even browser-based or cloud platforms. With that said, I’ll be getting the Wii version of Skylanders to see what it’s like.
As of this post, a specific release date has not been announced for any version of Skylanders.