Christine Negroni has gleaned some interesting information from a Japanese Transport Safety Bureau report including the following:

Japanese investigators are making a remarkable claim in the most recent update into the burning battery on an All Nippon Airways Dreamliner; the ship, JA804A was one of only three Boeing 787s to retain a wiring design the planemaker later revised.

The post is worth reading and even discusses some of the finer points of the Li-ion battery design in the 787.