A year ago I bought Dark Markets - A Guide to Katapesh (published in 2009) and couldn’t stop reading it. One of the most intriguing parts of the book was the setup about the Red Sultanas return. But other than establishing the existence of a complex standoff on the west side of Katapesh, nothing more was given.
A month ago I got the new Towns of the Inner Sea, and once again got teased with the Red Sultana plot. But again got too few answers to make an adventure out of it. And yet, there is obviously a great tale (or dear I even say a module) just aching to be told by one of the writing staff.
I wish to track down more official pathfinder lore on Rath Sandstalker, Noor the Red Sultana and Fort Longjaw. Can anybody help? Is there anything in future development?
The books you've already mentioned are really the only sources on your topics of interest. Other books make passing references to them, but add nothing substantive. As for future adventures set in Katapesh, who knows? I have heard nothing on the grape vine, but then again I am not as close to that vine as others.