DSCovered is based on the look of Apples very popular coverflow system, where you can see the cover art from your media flick past as you select something to load.
Homebrew games and applications should be able to load on ANY cart, as the internal loader is specifically designed for that in mind. Extra functionality, such as soft-reset is only available on certain slot-2 cards through a secondary loader. These secondary loaders and not available from here, however there are full instructions included in the download.
Thanks to http://nintendomax.com/viewtopic.php?t=11803&f=19 for the news.