The Nintendo DS Browser is a version of the Opera web browser for use on the Nintendo DS, developed by Opera Software and Nintendo. The Nintendo DS Browser comes in a version for both the Nintendo DS and the Nintendo DS Lite; this is due to the physical size differences in the memory expansion cartridges used by the browser, which has a capacity of 10 MB.
Supposedly only the Lite version will be available in stores whereas the Phat version will have to be ordered direct from Nintendo a'la Electroplankton.
I totally forgot about this. I was planning on purchasing Super Mario 64 DS tomorrow but I may save my dollars towards this on Tuesday. Hopefully it's better than PSP browser which is garbage.