From the same link:
UPDATE III: From the Wall Street Journal article, which has since been corrected, but which gives this background on the previously reported “cancellation”:
The former governor will now appear at a Friday event in Des Moines sponsored by the group Conservatives4Palin. It is currently scheduled for 8 p.m. at The Machine Shed Restaurant, though the location will probably have to be changed, the person close to Ms. Palin said. Ms. Palin is still scheduled to appear at a Tea Party Express tour stop Monday in New Hampshire. Ms. Palin may still hold an event Saturday, the person said, though she has no firm plans. It’s also possible she could still attend the Indianola tea party rally, the person said. The former governor’s team decided to back out Tuesday night after rally organizers re-invited Ms. O’Donnell to speak on stage. Organizers had booked Ms. O’Donnell, who lost her 2010 bid for a U.S. Senate seat from Delaware, to speak but quickly withdrew the invitation in an effort to avoid controversy. A Tea Party of America leader told Ms. Palin’s aides that the former governor told him to re-invite Ms. O’Donnell, which is not true, the person said, adding that there were also issues over fund-raising and logistical changes that were not approved by Ms. Palin’s team.