The lineup has been revealed for this year’s edition of Knotfest Brasil. The event will take place at Allianz Parque in Sao Paulo, Brazil on October 19-20 and it will find Slipknot celebrating the 25th anniversary of their 1999 self-titled album. Here’s the daily lineups: October 19: Slipknot, Mudvayne, Amon Amarth, Meshuggah, DragonForce, Orbit Culture,…