With its 25th anniversary arriving on Friday (June 7th), Stone Temple Pilots have announced that they will release a new "Super Deluxe" edition of their 1994 sophomore album Purple on September 13th.

The triple CD/single LP set includes a newly remastered version of the original studio album on both CD and vinyl, plus unreleased versions of album tracks and rarities, along with an unreleased full concert recording from 1994. The music will be made available both digitally and as a two-CD Deluxe Edition.

A previously unreleased acoustic version of "Big Empty" is now available digitally.

Purple remains a classic album a quarter century after its release, and guitarist Dean DeLeo told us a while back that he considers the band's music to be timeless: "We never want to date our material. When I say 'date,' you can almost listen to some stuff and just say, 'Well, that was the drum sound that everybody was using in '95. I think our records are kind of just -- the material is kind of timeless, you know, where you can't really date it. I think you'll be able to listen to it 20 years from now and think, 'Wow, it's just timeless,' you know?"

A limited-edition bundle of the "Super Deluxe Edition" is now available to pre-order at stonetemplepilots.com, which includes a bonus replica seven-inch vinyl single of "Interstate Love Song" that was originally released in the U.K. in 1994. The bundle is limited to 1,000 copies.

AUDIO: DEAN DELEO SAYS STONE TEMPLE PILOTS' MUSIC IS TIMELESS