According to this IGN piece, Monolith and Warner Bros has renamed Project Origin.
To cut a long story short, the F.E.A.R. brand ended up with Vivendi but Monolith was bought by Warner Bros. Now Acti-Bliz has formed, the name came back on the market, and Warner bought it. Project Origin's name has, therefore, been replaced with the moniker it was alway supposed to have.
Clear? Good. More through the link.