The service was started on October 1st 2012, when ANA was the first commercial operator to service Seattle with a 787. However, the route was cancelled after the grounding and battery fire dramas. On the 1st of June the service to Seattle resumed, but a Boeing 777-300ER was used instead. With the resumption of daily flights to Seattle this adds a second daily 787 service to North America with daily flights on the Tokyo to San Jose route as well (which will begin daily service on the 10th July).
The announcement of the 787 return to Seattle also came along with other route updates and changes. ANA will be increasing their flights to Chicago by adding a second daily service, using a Boeing 777, to help support the growing demand between Asia and North America.
In addition, ANA will also add extra destinations for the 787 to Singapore (Oct 1) and Munich (Sept 1).
As ANA increases the number of international cities it serves with the Boeing 787 to eight, this is a sign that the they are moving away from the previous Dreamliner drama. I would expect that as ANA continues to take deliveries of the 787, we will be hearing about future new destinations soon.