SEGA recently confirmed that they had a special Hatsune Miku related announcement to make during the Tokyo Game Show, and that announcement is not a new PS3 / PS Vita installment that I was personally expecting, but rather a follow up to the Nintendo 3DS installments that have been released over the past couple of years.
Titled Hatsune Miku: Project Mirai Deluxe (初音ミク Project mirai でらっくす), this rhythm game is once again set to feature Nendoroid/Chibi styled characters from the Vocaloid franchise. Rather than being a completely new game however, this will be a “Deluxe” version of Hatsune Miku: Project Mirai 2, featuring a number of new songs and music videos.
While only confirmed for Asian territories, Hatsune Miku Project Mirai Deluxe will be available from Spring 2015.