We should only be so lucky that Sigourney Weaver might be in the film. Though as we know only too well, rumors such as this often have no validity whatsoever yet they still get picked up and are still reported as fact by way too many sites.
But on the other hand, I still suspect that there will be confirmed info announced at the Fest - and that's only a little over a month away. And as I alluded the other day, in this day and age it would be nothing short of amazing if absolutely none of the info that might be announced at the Fest doesn't find its way onto the Internet beforehand...