The Chris Cornell-fronted group will release a 5-CD deluxe edition of "Superunknown" on June 3 and they recently performed the album in full at the iTunes Festival at South By Southwest in Austin.
"If you can single out any of our albums as being, like, the most iconic one, it’s obviously this one," Cornell told Billboard in Austin. "I think it’s an accomplishment, and I’m proud we did it. So it’s kind of a cool thing to do and concentrate on."
Watch Soundgarden at SXSW / Concert Review
Trent Reznor's NIN is currently on tour in support of last year's "Hesitation Marks." After a swing through Australia and New Zealand with Queens of the Stone Age, they have a full slate of Latin America and Europe dates scheduled until mid-June.
Tickets for the NIN/Soundgarden tour go on sale March 21. Return to Billboard.com on Monday (March 17) for an interview with Cornell about the anniversary and tour with NIN.
Nine Inch Nails/Soundgarden Tour:
July 19 – Las Vegas, NV (Planet Hollywood)
July 21 – Morrison, CO (Red Rocks Amphitheatre)
July 24 – Tinley Park, IL (First Midwest Bank Amphitheatre)
July 26 – Clarkston, MI (DTE Energy Music Theatre)
July 27 – Toronto, ON (Molson Canadian Amphitheatre)
July 29 – Mansfield, MA (Xfinity Center)
July 30 – Camden, NJ (Susquehanna Bank Center)
August 1 – Wantagh, NY (Nikon at Jones Beach Theater)
August 2 – Holmdel, NJ (PNC Bank Arts Center)
August 4 – Bristow, VA (Jiffy Lube Live)
August 5 – Virginia Beach, VA (Farm Bureau Live at Virginia Beach)
August 7 – Charlotte, NC (PNC Music Pavilion)
August 8 – Lakewood, GA (Aaron’s Amphitheatre)
August 10 – West Palm Beach, FL (Cruzan Amphitheatre)
August 11 – Tampa, FL (MIDFLORIDA Credit Union Amphitheatre)
August 14 – Austin, TX (Austin360 Ampitheater)
August 16 – Woodlands, TX (Cynthia Woods Mitchell Pavilion)
August 17 – Dallas, TX (Gexa Energy Pavilion)
August 19 – Albuquerque, NM (Isleta Ampitheatre)
August 21 – Chula Vista, CA (Sleep Train Amphitheatre)
August 22 – Irvine, CA (Verizon Wireless Amphitheatre)
August 24 – Mountain View, CA (Shoreline Ampitheatre)
August 25 – Los Angeles, CA (Hollywood Bowl)
Death Grips opening all dates except 7/24 and 7/27