Re:Optimus, we hardly knew ye.... (Score 1)

No, he will not die. The events in Transformers: The Movie should have taken place in the year 2005 (see scene two in the script). And, as best as I can recall, there wasn't an attack on Autobot City last year. Therefore, one can only assume that we are in an alternate timeline, one in which Optimus Prime will die in some other way.

Now, this may be a much more perilous timeline, as the attack on Autobot City led directly to the destruction of Unicron at the hands of the Autobots. Will he be destroyed before he reaches Earth or Cybertron? Only time will tell . . .