 The second Gigantour began during the third quarter of 2006; Megadeth again headlined, this time with Lamb of God, Opeth, Arch Enemy and Overkill.The 2006 tour included three dates in Australia, supported by Soulfly, Arch Enemy, and Caliban.In May 2006, Megadeth announced that its eleventh studio album, "United Abominations", was near completion.