Legendary just released an ultra-extended spot for Godzilla, which is basically a new trailer, and with it we got a first look at a Kaiju from the movie.
I'm guessing this is the Kaiju seen in all the recent Godzilla toy images.
Updated: with another screenshot below, revealing at least two MUTOs.
Update #2: with fourth screenshot.
"Godzilla" opens May 16, 2014 in 3D starring Aaron Taylor-Johnson, Ken Watanabe, Elizabeth Olsen Juliette Binoche, David Strathairn and Bryan Cranston. The screenplay is by Max Borenstein and Dave Callaham.
An epic rebirth to Toho's iconic Godzilla, this spectacular adventure, from Warner Bros. Pictures and Legendary Pictures, pits the world's most famous monster against malevolent creatures who, bolstered by humanity's scientific arrogance, threaten our very existence.