So within 1 year and 4 months, that got about 1/3 done. So as of 2022 Jan, they have at least 104 images, and in addition made 32 images between now and the beginning of this year so that brings them to a total of 136 images out of 300 (136/300) which is about 1/3 which does not include things like programming, marketing, or voice acting.
So if they'res 52 weeks in a year, that's 104 images per year (if they do 2 per week.) In addition, they started this project in January of 2021. So we have ~300 images they have to make, which I predicted they make 2 images per week. Now they promise to add images and an additional day to the game so let's say that value that adds additional ~80 images on top of the already existing ~220 images not including side content, or UI images.
I.e art live-streams, discord, and subscribe star, I predict they make 2 images per week for the actual game that isn't publicity or side content. I say this based on the images they show on social media.
I'm going to update my predictions here and say the 'enhanced' version will come out in mid to late 2024.