Hatsune Miku
Hatsune Miku was the first Vocaloid developed by Crypton Future Media after they handled the release of the Yamaha vocal Meiko and Kaito. The name of "Hatsune Miku" was conceived soon after the Vocaloid 2 announcements, when an English and Japanese vocal were developed for the character. The intended design was delayed and later used for Megurine Luka instead. Miku was intended to be the first of a series of Vocaloids called the ""Character Vocal Series"", which included Kagamine Rin/Len and Megurine Luka. Each had a particular concept and vocal direction.
Vocaloid Keyboard
In December a special event was held in which the first major appearance of the Vocaloid Keyboard was used. In the event a green version was shown with the Megpoid vocal used as the voice within the instrument. At the "Think MIDI 2015" event, a demo of the keyboard was seen. Later in December, a purple Yuzuki Yukari version began development.