This Unnamed ship projectile item will be introduced in Super Smash Bros. for Nintendo 3DS/Wii U. It was revealed on Sakurai's Miiverse page and simultaneously on the current Super Smash Bros. Official Website.
Overview
This may look like Captain Olimar's iconic spaceship, but as Sakurai said himself Pic of the day: "Is this a spaceship from Hocotate? No-this is a bomb SHAPED like a spaceship. After liftoff, it will drop down when you least expect it."
Confirmed for the Wii U version, unknown if it will also appear on the 3DS version.