The 3DS already has its first system update available for Europeans but it isn't simply an update, a message from Nintendo reads
Thank you for connecting your Nintendo 3DS system to the internet! We have prepared a 3D video for you to enjoy. This video is included as part of a recommended system update that enhances overall stability and communication features.”
The video is in fact the music video for White Knuckles by OK Go, a video which was filmed in 2D and 3D. You can see the 2D version below.