From the mailing list:
Due to unforeseen scheduling issues, The White Stripes have had to push back some of their early September dates. The only dates affected were those between September 4-13 and all but Albuquerque, New Mexico have already been rescheduled. For a full list of rescheduled dates please visit the “shows” section. A New date for Albuquerque will be announced very soon. We apologize for any inconvenience this has caused our fans.
A limited number of pre-sale tickets for the newly rescheduled Salt Lake City, Utah date at The “E” Center on September 29th will be available through the pre-sale link located at the top of the “shows” section of the site starting at 10 am MST tomorrow, June 1st. Tickets for this show officially go on sale to the public on Saturday, June 2nd via smithtix.com at 11 am MST.