Access to first pre-qualified S2 data is available from https://scihub.esa.int
Just search for S2A* and you will find the first S2 data over North Italy between the many already existing Sentinel-1 data.
Please note that the data are pre-qualified, current limitations include:
- Large absolute geolocation error (several hundreds of meters).
- Co-registration error between bands (within VNIR bands, larger between NIR-SWIR bands).
- No land/water and cloud masks available.
- For some products band 10 has not been radiometrically corrected.