Here is the website.
https://viadelaplataelcamino.blogspot.nl/
https://viadelaplataelcamino.blogspot.nl/search/label/MAPAS ETAPAS
It is in Spanish, but the maps are clear. Sadly, the maker is still busy. It is ready till Carcaboso so still a long way to go to Santiago.
But there are a lot of data: distances, river crossings, points of attention, albergues, and so on.
The site also has stage descriptions (alas, in Spanish) and information on albergues.
https://viadelaplataelcamino.blogspot.nl/p/albergues.html
Also this part is not yet ready.
There is also a Facebook page.
https://www.facebook.com/laviadelaplataelcamino/
As I postponed my Sevilla - Salamanca walk to next year (or later), I hope that webmaster Antonio then will be ready with his good work.