This just comes from "a source" at Ars Technica. This is still just a rumor, folks.
It would be a good thought, since they can just use the existing engine and the shooting range games in OoT and (other Zeldas) were pretty cool. Expanding those into something with a bunch of modes and levels would be pretty simple. And it might help extend the popularity of TP, just by keeping the name out there.
But I thought Duck Hunt was the obvious choice too.
I'm pretty sure the attachment will be packed-in with several different games, though, right? I thought it was going to come with RE:UC and maybe Ghost Squad too...
"[Our former customers] are unable to find software which they WANT to play."
"The way to solve this problem lies in how to communicate what kind of games [they CAN play]."
Satoru Iwata, Nintendo President. Only slightly paraphrased.