When it comes to making movies we all know there is great secrecy studios employ. Movie studios in general are all trying to produce block buster films to make the most money - half a billion to over a billion with production budgets under a buck fifty - 150 million.
Having stated this, these different production companies / studios are very competitive trying to position their releases at the most optimal time during the highest grossing months, middle of summer and end of the year.
So when it comes to making movies there has to be operational secrecy as to locations, characters, plots, special effects, and just overall what the movie will do in terms of being a competitor against any and all movies produced near the same time.
If there was a new Alien moving closer to or into principle photography it would be doubtful that the general public would hear or be able to read anything about it.
I am not sure who that source is that Leto is dismissing; but, I agree with Leto that it is very difficult to get information out of these studios prematurely simply because they have so much competition. Movie studios are trying to lock in their profits while maintaining as much secrecy as possible during any phase of their production.
These studios only release relevant information to the general public exactly when they want them to hear it so they can make the most out of promotional marketing strategies.
When you are spending a tenth of billion to make a film and have competing studios also trying to earn billions out of the same audiences, you do not want just any internet desk editorial columnist leaking your production strategy. These inside movie sources can be dubious at best and highly unreliable.
You will know when there is a real Alien film because there will be a real trailer for it that has been released by the studio heads.
