Assuming 16 episodes total, no more interludes, and each episode taking 3 months longer than the last, episode 16 would be released in March 2035, two and a half years after episode 15 in September 2032 (episode 12: September 2026; 13: June 2028; 14: June 2030).
Any of those assumptions could be wrong, and changing them will lead to other predictions.
Sure, it's always the enablers' fault; the person actually behaving badly is never to blame for their own actions...
You mix this up with victim blaming, but it is not. Just simple logic. The money of supporters makes it possible for the dev to develop continuously without losses. They are the regulators if a dev can do it, or cannot. If the flow of money stops, the dev will have to adjust. Not the supporter, but the dev. So in the end, while the dev does the work, the supporter is the one enabling it and thus has the most "power" in this relationship. Logically, if a dev gets bold, lazy whatever, the supporter can stop supporting him, signaling, that changes are needed. It is here, that the model fails, because most supporters are gullible, weak people, who are so addicted to the given product, that they can't come up with the balls to show who is the boss and support the bad behavior further, despite not being content. Thus, development times increase more and more. In some cases, the amount of content won't increase, or even decrease. Luckily, DPC is the type who makes bigger updates with more time given, at least so far. This update will show, if I err or not.