Sentinel-1B will launch today at 21:02 GMT (23:02 CEST)
You can watch it live here http://www.esa.int/Our_Activities/Observing_the_Earth/Copernicus/Sentinel-1/Watch_live_Sentinel-1B_launch
Once the data is available, revisits at the equator will be 6 days and much more frequent at higher latitudes.
So much data!!