According to a recent report, Lamborghini is working on something special to celebrate their 50th anniversary.
Nothing is official, but speculation runs the gambit from a special edition to a whole new model. If the latter scenario pans out, we could see a production version of the Sesto Elemento concept. Of course, if it's just a limited edition, we wouldn't be surprised if the anniversary model was based on the soon to be revealed LP700-4 / Aventador.
Regardless of what happens, 2013 will likely be a year to remember.