Doesn't really make much sense to prepare obits for people who aren't near the age of death, or otherwise aren't near death. The NYT prematurely prepared with Castro in 2006 -- who was thought to be near death -- and had to throw entire sections of their reporting out. [0] Most other newspapers, the Castro obit writers were no longer employed by 2016. It's basically journalism's version of cache invalidation, which is also one of journalism's hardest problems.

OTOH, I'm sure many news orgs have a Carrie Fischer obit prepared by now.

[0] http://www.nytimes.com/interactive/2016/11/29/insider/fidel-...