They've finally arrived, The Sacrifice quests are now out! You will get to uncover the truth in the new quests, through the 3rd cinematic-based storyline.
Here is a trailer for them:
You can unlock The Sacrifice quests after completing: The Second Dream, The War Within, Chain Of Harrow and The Apostasy Prologue.
New equipment - Umbra
Unlock the new Warframe Umbra, as well as new customisations, new gear and exclusive Twitch drops. Don the new Umbra armour, and equip your companion out with the all-new eclipse themed armour.
Stylize your game with all-new UI themes. Unlock and use the new Augment mods, set off to your nearby syndicate to utilise them.
The new primes are out: Limbo Prime, Destreza Prime and Pyrana primes. Wield the all-new Void Magician; bend the power of the void and destroy your enemies.