You don't need them before FI : at end of your AD, if you made it that far, they will provide you with all the informations regarding your photos. Passport size is 1,5' x 2'.
donna424
Did you apply for an AD? And if so, did you see any agency stated? It looks like you'll receive another invitation mail but they just wanted to give you the information regarding the change. Meaning it's a good sign.
Cheers,
Z