Ok read some new reviews and it looks bad,heard characters are even more dumb than in Prometheus,movie is 50% Prometheus sequel,40% Alien stuff,you can see plot twist from miles,and explaining Xenomorph origin is destroying a mystery and the power of this creature.CGI of creatures is not so good,they are showing entire alien too much not like in older movies were we saw them in shadows in the dark lurking etc and they are using same old scares from old movies.
"The vu has never been so déja: it's a greatest-hits compilation of the other Alien films' freaky moments. The paradox is that though you are intended to recognise these touches, you won't really be impressed unless you happen to be seeing them for the first time"
- Entertainment Weekly.
By the way really people you are talking here about spoilers?(some are not using "spoiler" warning,thanks.....)
Watch movie yourself,why some of you want to know stuff,movie will be even worse in watching because you will know everything and while watching you will be like "oh this is the moment i was reading about,oh another,oh another".