Cabal: That's what I've heard too, and I understand and agree with the change. Rumor has it the new ending has something to do with a giant Dr. Manhattan. But I've also heard that they made more than one ending, so who knows if that's the true ending in the finished film.
Sorry, what do you mean with more than one ending? O.o
I hope they're not trying to pull off one of those "Exclusive ending only for the DVD version" crap.
Anyway, I think that removing the squid from the ending could spell doom for the movie if done wrong. I mean, how can you pull off the "all-encompassing threat that unites the world against a common enemy " like Cogadh said without the giant squid.
I don't know though, i guess we'll have to wait for the movie to figure that out :-)