The tide of free content for Splatoon appeared to have ended in January, but in today’s Direct Nintendo revealed that it has other plans.
Coming next week on March 8th is a balance patch that will improve matchmaking in Ranked Mode, fine-tune gear abilities, and add “new Splatfest elements.”
Following that are new additions to the wide range of weapons already available in the game, which will be distributed in two parts. “Volume 1” of these weapons will launch at an unspecified time in April.
Source: Nintendo Direct