Since there are no actual reviews yet, that would be impossible to answer.
If you need it now, get it now. It is unlikely that we will see anything except for the FE cards for at least a while anyhow, and nobody really ever wants one of those although these are supposed to ditch the blower style cooling in exchange for aftermarket style cooling on the OEM cards this time around.
What do you need the card to do? 1080p? Max settings? The 1060 will generally do max settings in most games at 1080p. Some more demanding games might require moving a few sliders to the left or dropping down to high settings if using presets.
If you don't need it now, right now, then it might at least be worth waiting to see what we find once the reviews...