If you want to see the mechanics in action or read the official notes, you can check out:
It looks like you're searching for info on (v1.4.x). While the specific .rar file name you mentioned often appears on file-sharing sites, the actual "good article" or content you're likely looking for is the massive overhaul this update brought to the game. RPG.Tycoon.Supply.and.Demand.v1.4.9.rar
Recent patches (like v1.4.10 ) have focused on "Mega Stability," fixing long-standing issues like memory leaks and save-game bugs. Where to Find More If you want to see the mechanics in
You can no longer just stockpile gold. You now have to source, store, and trade resources like food and materials to keep your kingdom running. Where to Find More You can no longer just stockpile gold
A new Trading Post allows you to sell surplus resources or buy what you're missing to survive.
Settlements now have classes (Middle and High Class). Investing in them attracts wealthier adventurers who spend more gold in your shops.