Could it be possible that Smileboom, makers of the popular Petit Computer for the DSi, beat the Gateway to first offer true 3D homebrew to the masses?
http://smileboom.com/special/ptcm2/html_third.php
This is just a teaser page, and Google Translate will not help* with the Japanese text in image form, but it clearly is hinting (no, confirming) at a 3DS sequel to Petit Computer!
Stay tuned!
*could somebody help translate?