Infiniti is painfully slow at updating their models (see QX50... formerly EX50... and QX70... formerly FX35/37), plus they have lots of new product coming in the next few months like the QX30 and Q60, so I doubt we will see a complete new model until at least 2019, if that. How long was the G35/37 on the market before the Q50 was introduced? Also, even though the Q70 is the "flagship", there is much stronger demand right now for CUVs and SUVs, so I would imagine that is really their focus right now. The QX30 CUV is a great example. Just my guess.
