Marvelous Games confirmed today that Fate/Extella: The Umbral Star is releasing in Europe and Australia in winter 2016 for PlayStation 4 and PlayStation Vita through retail and digital stores. A Limited Edition is also planned, but details are TBA.
As you can see in the above announcement trailer, Fate/Extella includes Japanese voices.
Taking place after the events of Fate/Extra, here’s the description for Fate/Extella:

Developed by Marvelous Inc, Fate/EXTELLA: The Umbral Star takes place after the latest iteration of the franchise?s recurring battle royale, the Holy Grail War, where ?Servants? – ancient warriors of myth and legend – fight to reign supreme. The events of this title follow those of Fate/EXTRA, in which the world of SE.RA.PH is controlled by the all-powerful lunar super-computer known as the Moon Cell Automaton. In the digital realm of SE.RA.PH, the Holy Grail War is over, but the land?s new ruler faces challenges and threats from all sides. Those Servants who survived the war now find themselves drawing up tense and unlikely alliances, preparing for a conflict that may tear SE.RA.PH apart…or destroy it entirely. In Fate/EXTELLA: The Umbral Star players will follow the narrative from the independent perspectives of three Servants, facing off against foes from all over the Fate franchise. Characters from Fate/stay night, Fate/Apocrypha and Fate/Grand Order appear, populating SE.RA.PH with familiar and new faces alike. In true genre fa...