Wikipedia is full of mistakes. I am sure there is SHA-1024 product coming out, the guy is making the hardware and applying for license...
There is no SHA-1024. And if there was, it would have been open source and not requiring any license whatsoever.
All besides the point, point being why would anyone use SHA-512 then if SHA-256 is impossible to break in this time and space?
Because some day, someone smart may discover a mathematical weakness in SHA-256 and attacking it may become significantly more efficient than just brute forcing 2
256 possibilities.