Something just occurred to me that could give this so called 'synopsis leak' some credibility, in relation to the other alleged leaked fact about a younger version of Elizabeth Shaw being cast...
The synopsis specifically states 2058 as the date of archaeological findings in Africa that reveal the 'Gods' homeworld coordinates. Maybe thats when we will see a young Elizabeth Shaw at the dig site with nutty professor 'daddy' Shaw who uncovers the discovery? Daddy Shaw becomes sick and dies, Tutankhamun-curse style. Elizabeth becomes obsessed and continues with her father's work, grows older, and gets the gig on the Prometheus trip.
Flash forward 27 years and we arrive at 2085 (the date specifically mentioned by Ridley) where an older Elizabeth Shaw (Noomi) accompanied by some marines wake up from hypersleep after a long journey aboard the starship Prometheus to make contact. Presumably the interstellar starship would have taken several years to construct plus the journey time may be 5+ years.
Make any sense?!