IGN has an interesting update here
Probably the best part of it is two-fold:
1) The graphs showing the profits/costs of the films in the series
2) The fact that 20th Century Fox has lost their damn mind
If they really aren't talking to James Cameron and Ridley Scott (both of whom, as the article correctly notes, are on record as saying they'd like to do another Alien film) RIGHT THIS SECOND then this project may as well roll over and die. But that's just my opinion.