Do you think any other kaiju would make a cameo in the new film?

So ive been looking around on the M.U.T.O. Website and typed in some random mess into the console. 

 king ghidorah recived- This strange phenomena is heading your way

That gave me a small thought, and it was making me wonder if any other kaiju will make a cameo or have any kind of reference in the film. 

I.E.- Orga's ship is discovered out in the ocean after an end credits scene. 

it'd be nice if there were a scene of me heading toward earth....