This Experience thing must be updated weekly. I too had an email earlier this week to say one of my photos had been used - but to my shock when I got onto the page, they'd actually used 3!
Only one now seems to be in circulation on this Experience thing, so yeah, are images getting refreshed throughout the era?
^ yeah I've seen different pictures come and go so yeah it seems to be getting updated all the time. The email I got yesterday said they had a high volume of pictures been sent in.