¿que tal si nos facilitas algun enlace a esos rumores? Porque lo único que he encontrado son comentarios de Duchovny y Anderson de lo mucho que les gustaría hacer otra película, pero eso no significa nada.

Series creator Chris Carter said in mid-2008 that he'd like to make at least one more film, but the underperforming box office of "X-Files: I Want to Believe" seemed to make the case that it was time for the supernatural franchise to go missing, permanently.
Este otro comentario es de agosto de 2009:

XFN is working to get more details but it is being reported via various translations that Gillian Anderson made a statement at the film fest in Sarajevo that she would love to appear in a third "X-Files" feature film and that planning might already be underway for a possible 2012 release.
Esto es de abril de este año:

Nearly a decade after the show that made him famous went off the air, Duchovny's work on "The X-Files" is still sending ripples all over the world. And with that in mind, the veteran actor said he wants to return again as FBI agent Fox Mulder.