10 Things We Learned From Marvel's September Solicitations
9. Miles Morales Could Get His Own Symbiote
So, it seems that Miles Morales will be losing his free will for at least a portion of this event.
The description for the character's tie-in has indicated that Morales will attempt to make a heroic sacrifice in the first issue of his tie-in book - one which will result in Carnage's minions turning him to the dark side.
This will involve a dark-symbiote taking control of Miles' faculties and sending him after "one of Peter Parker's friends". It sounds like a classic, horrifying Carnage scheme and is well in keeping with what has been suggested of the tone of this event.
If the cover (which you can see above) is anything to go by, then this will end up being a skin-crawling read, and an incredibly uncomfortable experience for the second Spidey.