Just like when I got the Warp Whistle and won Video Armageddon!
Super Mario Advance 4: Super Mario Bros 3, as expected, is a precise port with updated graphics. The backgrounds (not the foreground) seem to follow the same style seen in Super Mario World.
It still includes the Mario Bros minigame, and secrets like the Warp Whistles are still in the same places. The real new feature is being able to play new levels from eReader cards. Hopefully, we'll get some extra challenging extra levels. It's one of the most-owned games of all time, so it'll be nice to have some new challenges.