I recall this offer previously but it had expired. It now appears to be extended till the end of the year! You need to see a demonstration of the camcorder which will entitle you to the extended 5 year warranty as well as 10% cashback OR the 32GB card. You need to complete the claim form in the link attatched.
Free 5 Year Warranty and 10% Cashback or 32GB SD Card on all Panasonic HD Camcorders