The ENO 2009/10 video doesn't discuss Satyagraha's revival, but the music is played at the beginning and end of the film (presumably live audio from their 2007 production).  The ENO  only produces opera in English.  It's an odd practice doing Puccini, Wagner and Verdi in English. However, Satyagraha is somehow exempt from the house rule of English only.  The ENO website only lists performances through the end of this year 2009. At some point one expects them to publish their spring season.