During Nintendo's investors meeting one of the others things they talked about was their future plans for the 3DS. One of things that were talked about was that there would be several strong titles for both first and third parties planned for release. They also plan on focusing on releasing evergreen titles, special values and offerings, and expanding the Kids and Female demographic.
One of things they also plan to do is use nostalgia as well by using the release of the upcoming Pokemon Generation bundles, and Virtual Console.
One of the key elements they plan to use of course is the catalog of new upcoming titles. Hopefully this will help boost sales for the 3DS