https://wccftech.com/warframe-the-sacrifice-available-now-pc/

Digital Extremes announced that The Sacrifice, the next cinematic quest for Warframe, is available now on PC and will launch on PlayStation 4 and Xbox One later this Summer.

The Sacrifice is for all Warframe players, but only dedicated Tenno who have trekked deep enough into the game can start it. Only upon completing The Second Dream, The War Within, Chains of Harrow and the Apostasy Prologue will steadfast Tenno learn the plight of The Lotus, Ballas, and the creation of the Warframes. Tenno will wind through a labyrinthine gauntlet of action-filled gameplay, flashbacks and cutscenes in this harrowing new Cinematic Quest. What is at stake for the future of the Warframes?