The expanse season 5 release date is December 16th, 2020. On 11/24/2020, Amazon has officially confirmed that it has ordered season 6, which will be the final season. Renewal of The Expanse for a season 6 came just a couple of weeks ahead of its anticipated fifth season.
The Expanse takes place hundreds of years in the future, when humans have colonized the solar system. Mars has become an independent military power. Planets including the Earth rely on important resources from the Asteroid Belt, where air and water are highly valuable, even more valuable than gold. Tensions have been rising between Earth, Mars and the Belt. These powers are close to war and a little spark could create a large-scale conflict.
The Expanse was revived for Season 4 by Amazon, following cancellation at Syfy. Season 4 premiered December 13, 2019 on Amazon. In July 2019, Amazon renewed The Expanse for Season 5, ahead of the fourth season, and eventually renewed the show for a final season 6.