It's been known for some time that the red Wii that just hit the streets in Europe would come with a copy of something called Donkey Kong: Original Edition (as well as copies of New Super Mario Bros. Wii and Wii Sports).
What wasn't known until a few days ago (yeah, I'm a bit late to the party on this one) is that Donkey Kong: Original Edition isn't, as some in the gaming press assumed, the arcade version of this Nintendo classic. It also isn't the Famicom/NES version.
Rather, it seems to be a combination of the two--or, more specifically, it seems to be the Famicom/NES version updated to include the arcade version's cement/pie factory level. (This version also re-introduces the animation that shows the titular ape picking up Pauline and taking her to the next stage.)
Here's a fairly horrible video of the whole thing in action:
Skip to the 58-second mark to see the previously absent (in the Famicom/NES version) animation and skip to 1:05 to see the cement/pie factory stage.