Hi! The update every Monday is my overall progress, I don't have the habit of making in-game updates while the script is still in progress >< Usually, my in-game updates is scheduled after the game is finished (to fix bugs, typo, etc).
The deadline/original release date is July 2018. However, it might take longer depending on my speed of programming & script-writing (I personally have told my dear readers about this and fortunately, they wanted what's best for the game and willing to be patient ><)