I was talking to our rep earlier today about Diddy Kong Racing DS. We were discussing a few features of the game, and when the review copy would be heading my way. I decided that I should bone up on the game, seeing that it is coming out fairly soon. I had read the Nintendo Power info, as well as the snippets that were sent our way from Nintendo. I figured I would try out good old Nintendo.com to see what was up. I was extremely surprised to find some new info...or at least, info I hadn't heard before. I have italicized the info that was new to me.

* Wish Race mode gives you complete freedom to design, build, and race on the track of your dreams, thanks to excellent use of Touch Screen controls. Nintendo Wi-Fi Connection compatibility lets you share your work of genius with everyone. Of course!
* Drivers can use Nintendo WFC to go online and race against players from around the world! Diddy Kong Racing DS also features multiplayer single-card download play and multicard local wireless play.
* Create your own multiplayer icon! Choose from a full palette and three kinds of brushes to create a masterpiece that identifies you in the midst of multiplayer madness.
* Unique touch controls! Spin a tire to get a speed boost off the starting line, and much more!
* Monkey around with two new racers: Dixie Kong and Tiny Kong!
* Customization rules! Diddy will make sure you can pull out your (virtual) monkey wrench and upgrade your vehicle’s speed, durability, and appearance.
* And more: A faster frame rate, retextured and remixed tracks, new racing challenges, brand new levels, improved vehicle control and more make this an experience that both newcomers and savvy vets will love!

Course creation...now you're talking! I would be happy with that alone, but the fact that you can share your work through the WFC makes it even better. This could add endless replay value to the title!