Prometheus 2 Ready to go according to Ridley Scott

Here's but a small blurb of a bigger interview, this was the only part pertaining to Prometheus 2;

Speaking to Empire Magazine, Scott teased:  "Prometheus 2 is written.  I have already gotten the next two films ready to go.  That will 2014, 2015."

Now, does this mean he has the next two Prometheus films ready to go, or just his next two projects ready to go.  I have heard that Ridley Scott has wanted to make this a trilogy....

Source;
http://www.entertainmentwise.com/news/135736/Ridley-Scott-Tipped-To-Remake-Agatha-Christie-Classic-Murder-On-The-Orient-Express