This was left in a comment on the DFB:
Update: Just spoke to a corporate rep for Ghirardelli (because I take peanut butter and chocolate THAT seriously) and she read me the company’s official statement. Ghirardelli has discontinued the use of peanut products at the *factory* level—meaning no more peanut butter in the packaged products. However, for the soda fountains, the Gold Rush sundae was removed as part of a semiannual menu refresh to make way for new items, not because it has peanuts in it. Although the Gold Rush is off the menu for now, the official verbiage is (and I quote), “It is possible that we will revisit it in the future.”