Nintendo has updated Splatoon 2 to version 2.2.0 this evening as of 8:00pm ET.
The update has some minor changes some minor fixes to Multiplayer, changes to the specifications for some of the main weapons have been changed, specifications for some of the sub weapons and special weapons, and specifications for points required for some specials have been changed.
There were also some minor bug fixes in Salmon Run.
Source: Nintendo
