1) it is still a strong currency, as strong as the NZD,
2) it has weakened somewhat recently,
3) it keeps weakening,
4) it is oversold.
Overall: a mixed picture, but:
a) I would not bet on the yen's strength, until it shows some strength,
b) I would not bet on the yen's weakness, until it is one of the weakest currencies among the majors.
But if I had to decide very soon, I would sooner bet on the yen's strength than on its weakness, which means: going short some yen pairs (esp. CAD/JPY or EUR/JPY). Until then - I'd wait for the yen to show some more strength.