Warframe Getting an Open-World Expansion This Year

Warframe is getting a substantial open-world expansion later this year.
According to developer Digital Extremes' announcement on PlayStation Blog, the expansion is titled Plains of Eidolon and will drop players into a large open world called Landscapes, which you can explore at your own pace. Check out the teaser trailer for the new content below:
Players will no longer just be completing a series of procedurally-generated missions, as you can now explore environments with a day/n