I have just seen this new image from the Transformers rotf colouring book and my first thought was it remind me of Beast War Tarantulas or Blackarachnia of which i grew up watching.
although the picture doesnt show us the face it is more likley the picture is in beast mode.
This wouldnt be the first time the Transformers movies have borrowed from the Beast Wars universe in the first movie the charcter Scorponok was based on his Beast Wars counterpart.
it is liley they will have Blackarachnia instead of Tarantulas because she has a bigger fanbase and is the second most popular female transformer right after arcee. But Tarantulas was alway seen with his little spider drones just like the ones ontop of sam above.
Some of you may argue that it is Starscream from the trailer image but sam was ontop of a car with no bug on him
who would you want in the film??