It was a combination of things, but there was a power surge which fried all hard drives and a lot of progress was lost. I decided it was better to cancel the project and start a new one where I'm the one coding things now.
His DLC will release in April most likely, so it won't release at the same time as his free route. This is because the Patreon is still my main source of income, so I'd rather people get the Plus version of Eeyok on there, than Steam :)