That's the problem. The Lost producers are really good at cliff hangers. I sure hope they don't cliff hang the creatures in this movie.
SPOILER WARNING!!!!!Reading some of the blogs and forums about the movie ome people think it's giant isopod (sea lice). There is some science to it in that really DEEP ocean nets have caught isopods the size of pigs.
Along similar lines, other ideas include a giant isopod along with a number of smaller isopods (offspring?) coming ashore in Manhattan. In the new trailer you see airforce jets dropping bombs in the streets of Manhattan. Don't see any large monsters around so what are they bombing? And there is a scene where it appears a woman is either a) being attacked by two large creatures, or,

two people (military?) in bio-suites are trying to restrain a woman and she seems to be about to burst from the inside.
A lot of other little odd stuff too. But remember that Lost had tons of clues in all episodes and many others scattered around the web. Who knows what is real or not.
But yes, I have high hopes for this movie!