Soulfly has just scheduled the date for the 11th Annual D-Low Memorial Festival. On August 31st, after Soulfly returns from their short tour of Western Europe, they will perform alongside several other as-of-yet-unannounced very special guests at the Marquee Theatre in Tempe, AZ. This will be Soulfly's only U.S. show before they begin tracking the next Soulfly album in September. The D-Low Memorial Festival is a special event every year; in recent years, the show has been filmed for The Song Remains Insane DVD release, and last year Igor Cavalera joined Soulfly on stage for the first time ever – reuniting Max and his brother to make music again. There's no telling what's in store for this year's festival, but it promises to be brutal.