EASA has released Notice of Proposed Amendment (NPA) 2012-11, communicating their intent to modify several Advisory Circulars (AMCs) to invoke DO-178C and Supplements.
The NPA also communicates their intent to revise CS-ETSO to invoke DO-178C.
The NPA provides the draft update to AMC 20-115, invoking DO-178C and Supplements, and providing criteria for when DO-178C and Supplements would be applied to modifications of previously certified systems.
The NPA is available at the link below.
By the way, the FAA’s draft revision to AC 20-115 is expected to follow within the next two months.