http://newerteam.comNewer Super Mario Bros. Wii is a 128-level hack of New Super Mario Bros. Wii upwards of three years in the making, and has tons of custom content, including various-colored Yoshis, Shy Guys, and the long-due return of the Hammer Bros. Suit from Super Mario Bros. 3.
Unfortunately, I'm going to be out of town until Thursday or so, and didn't expect it to release so suddenly. Really looking forward to playing it when I come back, though. I know Wayoshi's doing a playthrough of it, if anyone doesn't have a retail NSMBW disc or isn't able to / interested at the moment.
Discuss, though I'd prefer it relatively spoiler-free (nothing that isn't already visible in the trailer). I'm particularly curious to hear what they did with the soundtrack.