Yeah, I heard that the the trailer had such a poor reception (Yup, 35k dislikes) that they are going back to change things. They can pollish the turd all they want, but it's still going to be a turd.
The trailer has some good-looking scenes, if you can ignore the ugly Sonuc model. But a couple of good scenes don't make for a good movie.
Sounds like a generic story; the same basic plot as The Cat From Outer Space, ET, Escape from Witch Mountain, etc.