Translated from Theia website.
The Theia forges just released a new product based on Sentinel-1 and 2 data. Le "High resolution soil moisture" Scientific Expertise Center, driven by Nicolas Baghdadi, from Tetis lab in Montpellier and Mehrez Zribi from CESBIO, distributes Soil Moisture maps from the French Occitania region at 20 m resolution, produced every sixth day from September 2016 to May 2017.
These maps were developed and produced thanks to support from IRSTEA (UMR Tetis) and CNES (Tosca Project).
The first data are available following this link. It is of course planned to turn to an operational production on the whole France, but as always, going from prototype to operational processor will take some time.