Archion is a joint project of the Protestant Church in Germany (EKD) and the majority of the Protestant regional churches. Archion is also open to state, municipal and other church archives. The basic idea behind Archion is simple. The participating archives digitize their historical sources and present them via a common portal in order to offer you as much comfort as possible in family research and genealogy.
Normally, archion puts about 20-30 digitized church records online per day; in the last few weeks it has been over a hundred per day in some cases.
Therefore, update information comes every 4-6 weeks; this update about the digitized church records came after only 14 days.
Follow up delivieris refers to church districts where books have already been put online and where there were now subsequent deliveries to fill gaps.
I estimate that there are about 400,000 Protestant church books in Germany.
In any case, it will take years until all of them are digitalized.
This is just an update, so that family researchers can see whether churchbooks that might be of interest to them have been put online or will be soon.