https://www.bydanjohnson.com/latest...e-light-sport-aircraft-regulations-july-2019/ TLDR quick summary, still in the early stages, and still years from becoming a New Rule: 1. The FAA says that the new rules will be "less prescriptive" and more "performance based." (Their words.) The weight increase will indeed be derived by a "power index" formula. 2. 4 seats for "personal use and flight training." Still no commercial carry-for-hire (naturally). 3. Speed limits will be higher, but still won't threaten the Mooney or SR-22 markets. 4. Single control of both throttle and prop will be permitted. For example, in the "takeoff" setting the prop is pitched for climb, in the "cruise" setting it's pitched for economy. 5. Electric and hybrid propulsion will be permitted.