It wasn't too long ago that ANA decided the 77W would be the largest plane in its fleet, but it has now changed its mind.

ANA has pretty much decided the 777-300 will be a portion of the new large
capacity jet fleet. However, it'll be joined by either A380 or B747-8I. ANA
is still in the process of studying both types, but the future concept is
pretty much relying on the 777-300 whether it orders 748I or 380.

The airline plans to phase in 50 new large capacity jet.
I got this via e-mail and was a translation of a Japanese-only article.

The original article was very short, but it seems ANA will order upwards of 50x planes, most of them 77W and then some A380 or 747-8i.

So ANA has joined Air India and Virgin Atlantic in the A380 v. 747-8i ordering.