I've found some more news which may be of interest:

Reports are already emerging of lawyers commencing legal action.
Emily Gardner, a Honolulu animal law attorney, said she had never heard of a pet food recall this large. Gardner said she would represent a client in some type of litigation to make sure companies improve oversight of their operations.

Also, it may not be the wheat gluten. CLICK HERE for a lengthy report "The Latest Pet Food Recall - As provided by Burton Patrick, Owner, Pet Supplies 'Plus' Pittsburgh"

And, finally, this from menu foods:

Company tells customers to hold onto vet bills

A company spokesman said customers should hold on to packaging and vet bills in case financial compensation is offered in the future.