Godzilla 2 - Monsters confirmed (SPOILERS)

SPOILERS

I'm following a live blog of Legendary's Comic-Con panel on ComingSoon.net and apparently a teaser from Monarch was shown that utilized newsreel footage similr to the opening credits of Godzilla but included the tag: "There is still one secret that remains hidden, there are others." Afterwards three shadows are shown each with its own caption beginning with "Codename: Rodan," "Codename: Mothra," and lastly, "Codename: Ghidira!" Legendary reaffirmed this with two tweets regarding Godzilla 2 and Godzilla 3.

Sources: http://www.comingsoon.net/news/movienews.php?id=121083

https://twitter.com/Legendary/status/493117010532786176

https://twitter.com/Legendary/status/493117150148583424