while this is possible, it is also very possible that the renders are not created in the same order as the story goes....
Is it possible that stoper was getting the second half of the update done in just over a month, while the first half of this update took him more than 8 months? I know there's rumours about stoper not actually working for several months at the beginning of a development cycle, and this would certainly reinforce these theories. Now, many people would probably say how that's just a stupid coincidence and doesn't mean anything, but look back at my second paragraph and why I said to keep that in mind. Also, there is another development blog from September 8th, which shows a kitchen table with cake and milkshake on it. This was used at the very end of the 'Heather event' and is completely in line and the right order with the Dartboard devblog from the 28th of September.
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I'd believe most dev first determine the scope of the next update, make outline, plot, review and edit plot multiple times. Then they would make a flowchart of scenes and draft on the graphics and scripts. Actual rendering probably would come last and you would want to first render scenes or 3D models that are finalized while sex scenes or complicated scenes that could be prone to changes from the writing would be worked on last.