An official Hunter: The Reckoning 20th Anniversary Edition (H20)
You may find unofficial community-made conversion guides or homebrew PDFs on sites like the Storytellers Vault , where creators are allowed to use "Hunter 20" branding for supplements but are strictly forbidden from publishing a full Core Rulebook. Where to Find Legal Hunter PDFs hunter the reckoning 20th anniversary pdf link
Because there is no official H20 book, fans have created their own 20th-anniversary style materials: An official Hunter: The Reckoning 20th Anniversary Edition
from Paradox Interactive to see if the new style fits your table. Onyx Path Forums Future of the Hunt hunter the reckoning 20th anniversary pdf link