Take it with a mountain of salt as usual, but it does synergize well with AMD's statements that the high end card would be an "nVidia killer", and the fact nVidia may be prepping a Super version of the 2080 Ti. However, given that this is just a tape-out means that, if it's true, they won't be on the shelves until at least August, which is about what everyone was expecting.
With CES so close AMD will no doubt say something, but one thing is certain: it will be -expensive-. Between gigantic die size, increasing memory costs, and premium segment means it'll be nudging $1000 in all likelihood. Something that isn't in the report but is also likely, the revised die will likely lead to 5x50 revision cards as AMD salvages only partially functional dies.