When does Mobile Suit Gundam Unicorn RE:0096 return?

Mobile Suit Gundam Unicorn is a Japanese novel series by Harutoshi Fukui. The story is set in Universal Century 0096 as a sequel to Char's Counterattack. An OVA adaptation by Sunrise ran in seven episodes from March 12, 2010 to June 6, 2014. The project became one of the defining Gundam hits of the 2010s.