Quote:
From what had been said, SEGA and Sony wanted to make it available to play PSO2 from Vita, PC and PS4 and be able to play with people of every console version simultaneously and seamlessly. As of now they are working on compatibility and conversion issues from each to each other, but once they are finalized, then we should start looking into when the release for US will be, as it was implied they wanted to release [PSO2 - US] when it was finished, so a US version is still very much possible in the future.
Of course, don't forget to comment to developers, send your letters and feedback to let them know how much the game is anticipated here as every effort on the community's part can make a big difference on a title's release in the US!