There are actually several rumors floating around regarding the Cloverfield DVD release - specifically regarding the release dates, formats, and extras.
I've heard two supposed release dates for Cloverfield - April 15th or the 22nd, although there has been no official word. Logically, that time frame seems about right, since I Am Legend opened about a month before Cloverfield, and its release date will be on March 18th. VideoETA is estimating April, but won't announce an official date until the 18th.
FWIW, Cloverfield won't even been released in Japan until April 5th. Looking again at I Am Legend, Japan was its second highest foreign box office, pulling in over $40 million. I think the 'American Godzilla' might do well enough in Japan to not want a DVD release a week or two later.
There are a few wrenches of the monkey variety that could also cause a delayed release. First, Paramount was until recently in the HD-DVD camp, and while they have recently canceled all new HD-DVD releases (including Sweeney Todd and There Will Be Blood), they are not expected to release any Blu-Ray movies until the Summer. I don't know whether it makes more sense to:
- Release the movie without Blu-ray, then release a 'complete' Blu-ray version later
- Release the movie with a stripped down Blu-ray version now, then re-release an enhanced version later (known as 'double-dipping')
- Delay the release date until both formats are ready to go
UPDATE: I just received an email from Paramount promoting their final two HD-DVD releases, and the standard-DVD only release of Sweeny Todd. So, it look like we will probably get a standard DVD release for Cloverfield next month, then hopefully an HD sometime in the summer.