No, your eyes are not deceiving you here either. Around the same time tonight that Nintendo released an update for the Wii U‘s firmware, Nintendo decided to do the exact same thing with the 3DS. Just like the Wii U, the 3DS has become nothing more than a memory. And also like the Wii U, Nintendo has still been releasing rare and random updates for the 3DS firmware.
If you still use a 3DS, and you still want to download updates for it, this update will change the version number of the firmware to 11.16.0-48U. The official patch notes are exactly like tonight’s Wii U firmware update. The only thing Nintendo says is that “further improvements to overall system stability and other minor adjustments have been made to enhance the user experience”.