We already posted about the release of The Expanse on bluray/dvd, but this the official press release:
Universal Studios Home Entertainment has officially announced that it will release on Blu-ray The Expanse: Season Three. The three-disc set will be available for purchase on July 17, 2018.
Synopsis: As the war between Earth and Mars ignites across the solar system, the terrifying next phase in the evolution of the protomolecule threatens the very existence of humanity. Caught in the middle, the Rocinante crew struggles to deal with tensions amongst themselves, while striving to survive and aid those in peril.
Anna Volovodov - Elizabeth Mitchell - Projects - The Expanse