Kokone

Unreleased kokone (心響) is a new Japanese VOCALOID developed by Internet Co., Ltd., and will be released in February 2014 for the VOCALOID3 engine.

Etymology
Her name means heart sound.

History
kokone was first announced via Twitter on December 23rd, 2013 which featured her first demo song. A tweet soon followed confirming her February release. The vocal is confirmed to be based on someone new.