"Stub-outs" and future development (NPDc6)

Greetings all, My project is surrounded by adjacent development/redevelopment opportunities - all of which will in time be redeveloped to connect to our street and pedestrian grid, but probably not in the near future, so we have many stub-outs terminating at the boundary. According to the LEED ND Reference Guide, stub-outs are considered "culs-de-sac" and subject to the 10% limitation of culs-de-sac without pedestrian or bicycle connections. Needless to say, because the streets are stubbed so are the sidewalks, for we don't have control of the adjacent properties to develop connections. If the planned street doesn't connect yet to existing external streets, must a pedestrian through-connection still be provided to an existing street regardless? (The fact that they are mentioning the cul-de-sac rule seems to imply this.) Or, is the Reference Guide simply stating that the stub-out be developed to accommodate future pedestrian/bicycle through-connection as well?