Japan got this update first, but now Europe is getting the same update for Super Mario Bros. on the Virtual Console on the 3DS. Super Mario Bros. is only available to those who are 3DS Ambassadors who bought the 3DS before the price drop took into effect. The update gives a suspend play feature and the icon on the home screen for the game has been updated. No word on when North America is getting this same update.

Source: gonintendo.com