Looks like we finally have a official date for the 3DS firmware update, even if it is a little after the November release window.

Coming from the 3DS eShop…

Soon you can record up to 10 minutes of glasses-free 3D video using the Nintendo 3DS cameras on your Nintendo 3DS system. Record continuous motion, or in stop motion style – then save it to your SD Card. Capture your favorite family moments, silly pet tricks, and more in a whole new way.

See what you can do with this new feature by checking out our Upcoming Features video available in the Nintendo eShop. The 3D video recording feature will be available with the next Nintendo 3DS sytem update by December 8th instead of November as originally planned.

As of right now this date is only confirmed for Japan and NA. I will update this post once I receive confirmation about other countries.

Update:

I have received confirmation that Europe can expect the 3DS firmware update around December 8th as well.