Sony PlayStation Japan has just announced an online stream of the Hatsune Miku: Magical Mirai 2015 concert event, available freely to subscribers of the Japanese PlayStation Plus service for the PlayStation 4.
PS Plus subscribers can enjoy watching the full concert footage of Magical Mirai 2015 starting from October 7th 12:00 PM JST, until October 29th at 11:59 PM JST. PlayStation 3 and PS Vita users cannot take advantage of the online stream offer, sorry!
Source: Sony PlayStation Japan