Michael Bay has revealed another vehicle which will be used for Transformers 4 as the 2013 Lamborghini Aventador LP 700-4 Coupe. Mr Bay made the announcement on his website today with the text "Unveiling yet another surprise . . . the extraordinary and exhilarating 2013 Lamborghini Aventador LP 700-4 Coupe. High resolution photo: http://bayhem.com/16OKk8T"
Could this be a new Sideswipe or could it be a Decepticon, Lockdown perhaps? Time will reveal all.
Update
Michael Bay has also posted a new groupshot of the Autobots over on his Flickr account on the 1st June which is missing both the Lamborghini and what appeared to be Ratchet who is yet to be officially announced and was spotted at the back of the original groupshot image by HotshotsWorldWide