More 3DS info

• Virtual Console will be replaced with the new eShop
•  eShop will have a smoother interface with demos and videos
• Monetary system will be replaced by a cash based system (money instead of points)
• Friend code will be tied to your 3DS (only type-in someone's code once, ever)
• Check to see if your friends are online and see what their playing
• If connected to a friend via local wireless you can push a button to accept or send friend requests without having to copy friend code
• System Transfer is a feature that enables you to transfer downloadable software already purchased on a Nintendo 3DS system to another Nintendo 3DS
• System Transfer can be used to transfer applications bought on the DSi or DSi XL to the 3DS

Sources here here and here.