Talking about "pressure" to get the 787s back in the air, here´s a quote from the latest Seattle Times article:
ANA and Japan Airlines should be first in line for the battery retrofits, though for those airlines the timing must also await approval from Japan’s Civil Aviation Bureau (JCAB).
Typically the Japanese regulator, like aviation regulators worldwide, will simply go with whatever decision is made by the FAA.
Given the serious financial pressure on ANA in particular — it’s had 17 Dreamliners grounded for approaching three months — an industry source in Japan, who asked not to be identified, said the JCAB will likely quickly follow the FAA’s lead.
787 testing done, Boeing ready to quickly retrofit fleet | Business & Technology | The Seattle Times