Relieved to see some negativity here in the comments. Over on other sites everyone's caught up in the comparison to AMD, which to me is irrelevant; NVIDIA's pricing on this card doesn't compete well with its own products.
As someone put it in another comment thread:
"Historically, if you bought a card, say $350-$400, wait 2 years, you save up another $350-$400, you get a really nice upgrade. 670 -> 970 -> 1070 were nice. What do we get today? Spend $350-$400 get a 1070 wait 2 years, save up another $350-$400 you get 2GB less RAM. Thanks nvidia."
Obviously that's an exaggeration, but not by much. The 2060 is not by any means a bad card, but after nearly three years of waiting it's disappointing to get such a tiny upgrade in the same price bracket (or, for 1060 owners, a decent upgrade in return for much more money).
It's reminiscent of the borderline stagnation we saw from Intel for years prior to Ryzen. Ray tracing is a nice idea, but at the moment it scarcely rises about the level of gimmick; in terms of overall performance and cost efficiency, it seems like NVIDIA's resting on its laurels til AMD steps up.