Although I will be thrilled if this is true, I find it very hard to believe that JL and NH will offer anything cheaper than the 28-day advance purchase C class fares that they already offer. Those fares are already very good for long-haul C class on a quality airline. I flew NRT-IAD in C for 390,000 yen (incl all taxes) earlier this year.

And considering how C class capacity keeps declining as airlines introduce ever-more extravagant and spacious seating (see ANA's new 777-300ER which has drastically reduced capacity), I can only imagine that fares will go up.