This was later confirmed to Erica from sources that wish to remain nameless but are working with said art team. Now we here at LOTR News have not gotten any pics yet, but this is John Howe's rendition of Barad-Dur:
Can you possibly imagine a 7 foot tall statue of this! For those that have no idea where Barad-Dur fit's into LOTR this is what I could find Barad-dur: The greatest fortress-tower on Middle-earth during the Second and Third age of the Sun was Barad-dur in the evil land of Mordor. Called the Dark Tower by Men and Lugburz by Orcs, it was built after the first millenium of the Second Age by Sauron, with the power of the One Ring. -David Day 'A-Z of Tolkien'