NHF – new heroes for Heroes V 3.1.

The Necropolis stream was using version 0.85.11 (a special version for the streamer), and version 0.85.0 is available for download in the header.
That's why there are no new heroes.
To download the new heroes, you need to wait for version 0.86 to be released.

No, they were using version 0.86.