Hi Jim!
Congratulations on your upcoming Walt Disney World vacation!
You are indeed able to upgrade from your pre-purchased PhotoCD to the new PhotoPass+ product!
To do so, simply visit any PhotoPass view station through the Walt Disney World Parks, Downtown Disney and select resorts after your arrival.
The cost of the new
Disney's PhotoPass+ product is currently $199.95 and includes many additional features not included with the PhotoCD pre-purchase. For full product details and including Frequently Asked Questions, visit the Disney's PhotoPass information link on Facebook which I've provided just above for you.
To process your upgrade, you'll need to have the name, phone number and email address that was used to purchase your pre-purchased PhotoCD online and a Cast Member will be able to assist you in upgrading to the PhotoPass+!
Wishing you a simply Magical time at Walt Disney World Jim!
Kirsten