NRM official line on the Mallard 75th record anniversary

From Twitter brand new on NRM press site, the A4 story http://www.nrm.org.uk/PlanaVisit/Events/mallard75.aspx

 

great spectacle, a few RNF raised eyebrows, "35 A4s were built, but only six survive". 6/35ths of the class? How many more is there room for? How about an entire new build one with which to break Mallard's record?