Granted, I've seen a couple articles, including this good Black Gate one, stating that the film may have actually been retro-fitted with additional reshoots to make it align with the Cloverfield movie in a way and altering the original movie drastically.
The new Big Game trailer definitely makes it seem like another possible alien entity is wreaking havoc, only this time in an area that does not appear to be quite as metropolitan as the New York setting of the previous film. This has me really considering what the possible connections could be and I may have to start swinging through the Slusho! drink site, and its fake creator's site the Tagruto Corp., to check for possible updates and marketing hints.
Plus, all these people are hiding out in a fallout shelter, which could be tied to the bombing at the end of Cloverfield. I mean the we don't know how large an area was covered when the bomb dropped. I honestly haven't been this curious about a movie in quite some time which is a very good thing.
Personally, I'm quite interested to see the film either way. If it is done well enough, and that looks to be the case, it'll be entertaining regardless of whether they changed the movie into a tie-in or not. If it was planned as a spin off, that be very cool. If not, we'll have to wait and see. So far, it appears to contain a healthy dose of paranoia and some serious physchological horror in a nicely confined space. I am definitely intrigued.
10 Cloverfield Lane hits theaters March 11th.