Per a statement today on Slayer's website the band has postponed their forthcoming TV appearance and their tour dates with Megadeth:
"It is with great regret that Slayer announces the postponement of its "Canadian Carnage" tour with Megadeth, which was due to begin on November 8. In addition, the band announces the postponement of its appearance on "Jimmy Kimmel Live," which had been set for this Wednesday, November 4. More information will be released shortly regarding the rescheduling of the Canadian dates, as well as the 'Kimmel' appearance."
Slayer bassist Tom Araya will be undergoing back surgery tomorrow to treat an injury thought to have been caused by Araya's stage performance.
More information can be found on Slayer's official website.
Slayer's tenth studio album, World Painted Blood, is due out tomorrow.