- "Day one" system update that enabled eShop and other features
- Update to enable SD card storage(maybe that was just because I put an SDXC in it, not sure)
- "Day one" update for Zelda (not sure what it did, but it was there)
For what it's worth, none of these updates took more than 2-3 minutes to do. Would the system have been usable without them? Most likely (except for maybe the SD card one). So are there updates? Yes. Is it a "required" type of thing, where you basically always need a connection to be able to use it? No.