Third book in pillars of the earth series??

so I was wondering if there was going to be a third book in the Pillars of the earth series by Ken Follett?? i know he wrote the sequel World Without End, but what about a sequel to THAT book?? just trying to get the information for my dad who loves those two books -- any info would be great. thanks!Third book in pillars of the earth series??
The second phase of Follett's career was a conscious departure from the first: a series of four historical novels written in the late 1980s and early 1990s.

The Pillars of the Earth, the first of the four, set the pattern for the three that followed. Unlike Follett's earlier thrillers, it featured a large cast, multiple plotlines, occasional outbursts of violence, and extensive use of historical background. Pillars, set mostly in medieval England, followed the building of a cathedral.



Night Over Water was a Grand Hotel-style tale that took place aboard a transatlantic seaplane flying from Southampton to New York on the eve of World War II.



A Dangerous Fortune revolved around family and business intrigue in a large family of financiers in Victorian-era London, and



A Place Called Freedom took place in Britain's North American colonies around the time of the American Revolution.



His most recent novel is World Without End, a sequel to The Pillars of the Earth, released in October 2007.