The official Transformers Facebook page has recently updated with a special 10 Years of Optimus Prime video that features the different Voyager Class figures of Optimus in the movie toylines. The video also features a better look at the newest Voyager class figure for Optimus Prime in the Transformers: Last Knight toyline.
https://www.facebook.com/transformers/videos/1254030111333847/
Source: Transformers Facebook