You're talking as though I am sitting on both versions, while randomly choosing to release just one of them for no apparent reason or thought behind the choice. This is not the case. As Lydia mentioned as well, this takes a lot of time and, in my case at least, that's a rather finite resource :p
Those with "average mental faculties" who cannot use the 12 month calendar, can always do the necessary calculations and figure things on their own.
If time is a constraint as you say, why not release the source material that you use to make the calendar?
That's the source's source.
I'm looking for the material that produces the PDF. Like an editable document.
There are other calendars that are similar to this one, but they may also contain a lot of unnecessary or incorrect information. I haven't looked into it in detail. By running JoS Astro's code with a suitable algorithm, one can collect zodiac data day by day for the whole year.
What I am also curious about is how these PDFs are created. Because there is a lot of data and it would take a lot of time for someone to process the data one by one into a PDF for 365 days. It would also introduce a margin of error. The team probably came up with a clever solution. Of course, they have the right not to share it.