He's one of those actors that if you told me he was dead, I wouldn't have been surprised, but then you go to the theater and in some random role, there he is.
It really messes with me though when someone dies before their last film came out. I watched that Batman movie with a knot in my stomach the whole time.
“He’s so good. But he’s gone. WTF.”
I don’t recall who now but there was some actor whose last film came out more than a year after he died, and that felt messed up and I can’t articulate why.
Even without incident, many movies with heavy special effects can take up to a year to finish the final draft. I kinda suspect it's by design. Get the studio hooked and ask for more money to increase the production values to match the acting.
Paul Walker is probably the most recent one to fall into that category. I believe his character will be in the next Fast and the Furious movie, but it'll be a CGI role (with family members standing in as the body/face they CG-enhance)