We plan on continuing to release free public demos that have updated features - for example, I'm going to put out another public demo update pretty soon with the new features like 360 aiming - but they won't ever have entirely new content. All future free demos of CPE will have the same amount of content as this demo, with the Caves and Summit fully explorable, and the demo ending after the 2nd boss fight.
I totally understand not being able to support on Patreon, and that's why we post all of our devlogs for free, so everyone can still keep up with the game's development even if they can't afford to support us financially - but at the end of the day, Crisis Point is a paid product, and giving out tons of content for free means there's not much reason to support us on Patreon, and we need that funding to be able to finish the game. The public demo here on itch.io has around 1-2 hours of content, which I think is plenty of gameplay to decide if you want to get the full game or not, so that's why we don't plan on doing more free playable content.
If there are any more major updates like this one, that make radical changes or add completely new features, then we'll definitely do more public demo updates - but again, they won't ever have more content than this one, just updated features