Warframe is an MMOTPS that has managed to surpass the 2 million users mark in less than 8 weeks into Open Beta.
Recently the game had its biggest update yet, they decided to simply call it Update 8. One of the main features of the update would probably be the Clan Dojo. Clan Dojo allows players to participate in 1 vs 1 battles with their clan-mates, which was previously impossible.
The update also included new content like location sets, researches, weapons and mods.
You can view the full update notes here.