NH204 (FRA - HND) for the 16th has now been deleted from the flightaware log. Not sure what plante that would be that was ferried back from Paris. ANA have no Dreamliner service to Paris, and neither does JAL to the best of my knowledge and a quick search effort.
NH203 arrived and NH204 closes on time in Frankfurt today on the 17th. Flightaware is still listing them as 787 but Frankfurt airport has them as 772.
According to FRA airport, NH203 for the 18th is scheduled to be on time whereas they have already posted a delay of nearly 6 hours for the return flight tomorrow. Also, both are listed as 772 whereas the Friday flights are usually operated by 77W (whatever that is).
Are they planning to do scheduled maintenance at an outstation?