PS4Xbox One Kingdom Hearts III DLC ‘Re Mind’ trailer set for September 9 Add-on due out this winter. Square Enix will release a new trailer for Kingdom Hearts III downloadable content “Re Mind” on September 9 at 8:00 a.m. PT / 11:00 a.m. ET / 4:00 p.m. BST, the company announced. If you missed it back in June, watch a trailer for the downloadable content here. Read up on a few additional tidbits of information here.Kingdom Hearts III is available now for PlayStation 4 and Xbox One. The “Re Mind” is due out this winter.