This will comprise the second September, October and November 2013 releases in a set of tales linked by the fact that they all occur in November 1963. Whether or not there is more of a link remains to be seen.
Sketchy details so far: September is the Fifth Doctor, October is the Sixth Doctor and November is the Seventh Doctor.
We do know that the November story will allow the Seventh Doctor and Ace to once again encounter Captain ‘Chunky’ Gilmore and his team. It ‘may’ also tie into the Counter Measures series!