Spoke with the Hunter Household this morning - the ARISS US QSL manager - and he is keeping up with our ISS SSTV QSL card requests!
In addition, the Russians are offering email "award certificates" for image submissions.
As the ARRL reports, " ...[more than] 9,000 images relating to the 40th anniversary of the Interkosmos Project period of the Soviet space program had been posted for viewing. The SSTV images, stored on a computer in the ISS Russian segment, were transmitted by RS0ISS on 145.800 MHz with PD-120 SSTV protocol, using a Kenwood TM-D710E transceiver.
"Certificates are being distributed via e-mail to those who posted reception reports and images. The emailed certificate commemorates the 20th anniversary (in 2016) of the Amateur Radio on the International Space Station (ARISS) program.
"To be eligible for the ARISS SSTV Award, participants should have received and decoded at least one picture during the activity period. Image quality needs to be good enough to identify the picture. Partial images are acceptable.
"To qualify, upload your decoded images and complete the applicationby May 15. Details and a list of ARISS SSTV award-winning stations are available on the application page."