Theia releases since June 2017 a new 20 m resolution product which indicates the snow presence or absence on the land surface every fifth day if there is no cloud.
Theia has put online 92 Sentinel-2 snow products, corresponding to 8 tiles in the Alps, Pyrenees, and High Atlas between July 2016 to November 2016.
The operational production should start in autumn 2017 (i.e. near real time), and will cover a larger area.
You can find the product documentation including a video tutorial here : cesbio.ups-tlse.fr/multitemp
The snow-covered surface Scientific Expertise Centre (CES Surface enneigée) who produces the snow product thanks all the people involved in this project, in the Muscate development and exploitation teams at CNES and Capgemini, for this first achievement and particularly Olivier Hagolle (Cesbio).