... The body proportion looks off. I could be wrong though.
And mainly his face looks untouched, not a drop of blood on it. Even his hair is perfect.
Every picture I've seen of Assad shows him to have a very long neck. Does this fella have a long neck - hard to tell at this angle.
I'm calling he's alive and this is a doctored photo to give him time to hide out or run someplace outside of Syria to avoid execution.
Mileage may vary....