Even though Splatoon launched fairly recently, Nintendo has already started to add content to the game.
Today’s update introduced the new stage “Port Mackerel”, the new weapon “N-Zap ’85” and unlocked access to the Ranked Battle mode. To participate in Ranked Battles, you’ll also need to be at level 10 or higher.
To showcase these additions, here are a few pieces of footage by NiNTeNDOMiNATi0N and GameXplain:
Also, the folks over at Digital Foundry published this frame-rate test of the game: