The Xbox 360 isn't the only system getting some new stuff this week: the "November update" has now dropped and is available for download for 3DS owners. The update adds the ability to record 3D video as well as the ability to record stop-motion and time-lapse movies. The video functionality is limited at 10 minutes and sound is not recorded.
The eShop is also getting the ability to download items while the system is in Sleep mode (previously, items were downloaded after purchase). StreetPass Mii Plaza is getting some updates as well, with a new Find Mii mode and Puzzle Swap pictures. QR Code support has also been added.
SOURCE: Nintendo.com: "Record 3D Videos and more with the latest free System Update"