While it has not been confirmed by Nintendo of America according to retails Nintendo is to release a new 'bonus disc'. The disc will be offered to those who pre-order Mario Kart: Double Dash.

The disc will apparently contain playable demos and possible video previews of GameCube titles.

The disc will apparently be given to customers when they buy Mario Kart: Double Dash. No news as of yet whether Nintendo of Europe will do a similar offer.

Updated:
We now have more info on this disc, IGN have recently put up the following graphic from Nintendo that reveals a bit more about the disc.

So it looks like its not the remake of Mario Kart 64 we were all hoping for, but a demo disc for upcoming games. Not the greatest of news but at least Nintendo are trying to show off upcoming titles.