I was trying to keep this on the down low when I posted
this cryptic post earlier. But @
CPH-Flyer did more research (and hopefully he's right), so it's safe to put this out in the open now
JAL will extend the advanced booking period from 330 days to 360 days from Apr 1 2019 (JST) for international flights. This includes cash ticket, award booking, and upgrade. So mark your calendar to get 30 days of award inventory released at once and the best part is grAAbers and grASpers won't be able to touch these inventories at all (assuming nothing changed on their end).