Not saying he will for sure, but what other logic would i go by, if not from what we have seen so far. Anything else would be purely a guess. But I have seen Sideswipe toys, jolt toys, toys for the three bikes and an ironhide toy but no Ratchet toy and I have only seen him in the one scene with all the autobots driving.
I have no idea who will die but but if i had to go by who I had a feeling about, it would be ratchet do to what info I have gathered. I don't want him to die.
And if he does die I think it would be a sacrifice situation where he takes a bullet for Sam or, going way out on a limb here, He gives his spark to Prime who is lying on his death bed after getting beat down trying to get the Cons to join forces to take out the fallen.
Thats just an idea please don't jump all over me, I'm sure I'm wrong, just killing time.