I'm sure the internals were photographed and dissected a long time ago but maybe someone is just now getting into the guts of the SoC. It's fun to imagine all the interesting things we might have laying around that are hidden by a $DEBUG=0 flag...
There was a blog post where someone reverse engineered the IR protocol of the pokewalker and found that it had a bunch of commands which were never used but are still active in the firmware (some likely were planned for events)