Spriggan is a prominent manga, so it's getting another anime, even though it's had one before.
The reboot of Spriggan is coming, and it's a few months away. News from AnimeJapan is that Netflix's ancient civilisation anime is due out on the 18th of June.
Based on Hiroshi Takashige and Ryōji Minagawa's Spriggan, Netflix's anime looks great. Hiroshi Seko of Attack on Titan, Mob Psycho 100 and Jujutsu Kaisen is supervising and writing the script.
A more advanced civilization once stood on Earth. Today, those that know the secret battle over the powerful relics left behind.