To commemorate their 15th anniversary in the music industry, Japanese rock band GLAY will release a brand new BEST-of album on the 10th of June, which is entitled “The Great Vacation Vol.1 ~Super BEST of GLAY~.” The album will include all of their singles released since 2001. The album will also come with 3 discs, and shall be released in three versions. Version A will come with a PV DVD, Version B will come with a documentary DVD, while the other, I think will just be a CD-only version.
The Vol. 2 Best-of album will be released in October ^_^
Source: Official Website and JaMe USA