Rock icons AC/DC have again added a couple of dates to their in-progress world tour behind last year's "Black Ice."

Since last check, two performances have been tacked onto the impending fall trek: an Oct. 21 show in Philadelphia and a Nov. 8 concert in Houston. The rock outfit returns to the road for an Oct. 1 gig in Phoenix, followed by arena shows in 18 cities through mid-November. The full schedule is shown below.

AC/DC also has plans to perform in Mexico and Puerto Rico in November, and has plotted an Australian leg that kicks off early next year. Information about those performances is posted at the band's website.

"Black Ice," the AC/DC's first new studio set in nearly a decade, surfaced last October. The album, which was sold exclusively via Walmart, Sam's Club and the band's website, debuted at No. 1 in 29 countries, including the US.

AC/DC began the "Black Ice World Tour"--their first live shows in five years--last October.

[Editor's note: After this story was posted, promoter Live Nation, announced that the Dallas and Houston shows--and their ticket on-sales--would be postponed. New dates and on-sale information will be announced.]