The following items are some of the planned features! If we see them all no one knows till it hits today. Though that is if it does not get delayed.

** EDIT ** The following frames have been said to be later in 18 - Nezha Warframe, Umbra Excalibur, Other Umbra frames, and a little other changes. Dang DE shifted some plans ** AS A NOTE THIS IS NOT 100% ACCURATE **

Planned Additions

Warframes
Ivara Warframe
Rhino rework

Animation
Emotes[1]
PvP emotes[2]

Enemies
Bosses
Nef Anyo rework, includes Derf Anyo[3]
Kela De Thaym rework
Phorid rework
Stalker rework
Grineer Bailiff (Teased during Emergency Exit Tactical Alert)
Sentient Faction[4]

Weapons
Nikana Prime
Kunai Prime
Rubico (Sniper)

Gameplay
Sorties
Additional Trials[7][8]
Jordas Verdict Nightmare mode
Focus System [10]
Revives reset per mission [11]
Damage 3.0
Charge attacks [11]

Cosmetics
Alternate skins for Loki, Banshee, and Trinity [5]

Other
Trade Relays & Trading 2.0
Solar Chart 3.0
Daily Tribute System (Login Rewards 2.0)
Revised Chat [11]
Scimitar Landing Craft

Mentioned Features
Clan Downsizing[12]
Earth's Moon -- Orokin Moonbase[13]