Everytime I see a clip or picture of the woods fight between Optimus and the 3 decepts, I keep feeling it will not end well at all.
Here is a new picture I found.
If you look just above the blade, you can see the outline of something. Whether it is important or not I can't say.
(Also, I did not see another thread talking about this and I did put spoilers in the title so I hope that is ok with Nelson)