House photos may be updated periodically by the real estate agent who the seller is working with so that the home always looks fresh compared with the changing seasons. This may be a question for the realtor you are working with - did your realtor take the photos him/herself? Was this done by a professional company for a fee? Were your photos taken by the Multiple Listing Service in your area? The answer to these questions will give you an insight as to what the expense would be to update the photos and perhaps why it has not been done. The flip side to the answer of course is whether the look of your home has appreciably changed and whether the current photos look outdated.