Amazon has put up a listing for the Chrono Orchestral Arrangement Box Set, revealing a release date. According to the product page, the soundtrack bundle will be coming out on Sept. 13, 2019, in the U.S. region. If you are interested, you can pre-order the box set with this link from the online retailer; furthermore, you can also check out an image of its packaging located just below this paragraph.
The Chrono Orchestral Arrangement Box Set comes with the CHRONO TRIGGER Orchestral Arrangement album, CHRONO CROSS Orchestral Arrangement Album and CHRONO ORCHESTRA—Wings that Cross Time— concert album. You can check out the product description for the bundle below (via the Square Enix Online Store):
We are pleased to bring you this orchestral arrangement box set, featuring arrangements of the performances from the concert, CHRONO ORCHESTRA—Wings that Cross Time—, at Osaka in September 2019 and at Tokyo in October 2019! Supervised by composer Yasunori Mitsuda, this ambitious piece was newly recorded in a music hall environment with full orchestral arrangements.
This product includes the CHRONO TRIGGER and CHRONO CROSS Orchestral Arrangement albums, slated for a same-day release, as well as an exclusive CD that includes new song arrangements that can only be enjoyed in this box set.