Now, if you'll excuse Alex, they have some beasts to slay...

The final official update (v1.0.4, ~450 MB) addresses:

As Alex booted up the game, they noticed that the version on the Switch was a bit older than expected. The game was a Nintendo Switch NSP (Nintendo eShop) version, which was a great way to play, but Alex knew that there were newer updates and DLCs available. Determined to get the best experience possible, Alex set out to update the game and acquire the coveted DLCs.

If you're looking to update your Torchlight II game using an NSP file, ensure you have a compatible tool, such as the Nintendo Switch Homebrew Menu, installed on your Switch. You can then use a tool like tinfoil or dbibackup to install the NSP update and DLC.