The Android Engineering Team hosted a Reddit AMA this afternoon to answer technical questions after the release of the fifth and final N Developer Preview. The more developer focused Q&A session discussed some app and Nexus-specific queries, programming languages, and OEMs updating to Nougat.
There was also discussion about removing the Night Mode from the final version of Android N, battery drain, and Material Design. For developers, it is definitely worth reading through the entire thread. Due to the interest, the engineering team will consider doing more AMAs in the future.