“The War Within Quest, first teased during TennoCon 2016, will have players embark on a chilling journey to the Grineer Queens’ Fortress, where both their Warframe and Operator will be pushed past their limits as they slowly unravel mysteries about the Tenno’s past and their true capabilities. In addition to the cinematic quest, The War Within update also includes new weapons, enemies, and a few secrets that will be revealed closer to launch.”
Do note that to play the new questline at launch, you’ll need to have finished off the Second Dream questline too. Expect bonus weekends along the way to build up all the hype. And there’s a new trailer and a parody video tucked down below!
Source: Press release. Cheers, ThatLanteshGuy!