For what it's worth, I combed over the Fuji Japan site yesterday looking for news about Neopan 400. They still list it as current. The only film related announcements they've made recently were about discontinuing all APS films and Eterna 400, a motion stock.
Not saying that they are or are not making Neopan 400 still. Just that it doesn't yet appear on Fuji Japan's site yet.