Sharing a stage with the likes of Enter Shikari, Jimmy Eat World, and Limp Bizkit, Thunder will play the festival's encore stage on Saturday and are just one of many bands to be announced in the latest update.
Details of the Jagermeister acoustic stage were also announced. The stage will be headlined by Essex four-piece We are The Ocean. The stage will play host to appearances from Hear Kitty Kitty, Toseland, Rob Lynch, Acoustic TV, Straight Lines, Fahran, The Killing Floor, The Afterparty, Pig Iron, Night x Night, Crash Mansion, The Graveltones and Arthemis and Avosetta as well as acoustic performances from Walking Papers, Buffalo Summer, Crowns, Heaven's Basement, Skin and Red White & Blues.
Elsewhere, Kvelertak, Zico Chain, Black Moth, Blood Command, The Wild Lies, The Howling, Page 44, Wounds and Devin Townsend have been added to the festival bill.
Download is set to run between June 14 and June 16. The weekend long event will take place at Donnington Park. Slipknot, Iron Maiden and Rammstein will be headlining the festival, whilst Queens of the Stone Age, Motorhead, The Hives and Thirty Seconds to Mars are amongst other highlights.