Chrom and Lucina from Fire Emblem: Awakening join the game as a Pair Unit, as well as Fiora from Xenoblade Chronicles, who pairs up with the returning KOS-MOS from the Xenosaga series.
PXZ2 is due release in Japan on November 12 in Japan, February 16, 2016 in North America and February 19, 2016 in Europe. There is no word yet regarding the release of the Original Game Sound Edition in the West.
Endnote: Just when I thought this game is already a must-have as it is, things get even better!