gel said:
Just seen another video of the Panasonic OLED in German and it does look good, the black is really black and the bright colours are really bright.
You shouldn't be chasing improved black levels when you own a TV that can produce perfect black (or at least blacks that register as absolute zero on expensive light meters).
The Panasonic and new LG OLEDs will produce exactly the same black levels as your current TV; in other words, as black as it's possible for a TV to ever display.
The new LG and Panasonic OLEDs should offer better shadow detail; and of course they can display 4K content, but this is of little advantage until the content's there, which isn't the case at the moment.
Right now, a 4K TV will need to upscale the overwhelming majority of content, and your 980w will do a better job with both standard definition and HD material.