Edit: Never mine saw the trailer those kids are evil toy breakers and savage!
You know,sid get a trauma on the first movie, so i dont think he will comeback, or if he comeback he will be good 
Yeah, I agree with lord_zedd on this one, I can’t see Sid breaking toys anymore because of what happened in the original Toy Story. I can see him as now being very disturbed, though. 
Or maybe hes a good boy now, maybe he isnt bad anymore, who knows…
That is true. Anyway yeah it is just i wonder
what happened to sid.
theres no way they would touch on Sid having kids. Hes only around 18 now, if we are to assume he was about the same age as Andy was in the first movie. to have a kid old enough to talk (which is what I think your getting at) he would have had to have a kid at like, 15. Disney / Pixar just wouldn’t do that.
If sid is in it at all I bet it’ll be limited to a cameo, nothing more. but I dont see them even acknowledging him. Andy’s moved away, who knows how far. it wouild be too much of a stretch. they’ve moved on. to bring him back now would come off as running out of ideas, rehashing the first movie.
I agree, I think that they should probably bring in new characters rather than continuing other’s which really don’t need to be. Although, how hilarious would it be if Andy and Sid are roommates?