Operation Tango has been updated to version 1.07 today by Clever Plays. You can find out the complete patch notes for this update from here.
This comes as part of a free content update that adds Challenge mode. This will introduce a new area for the players to explore adding puzzles and robots to hack. You can get the details on this update below, while the announcement can be seen on the Steam forums.
Operation Tango Update 1.07 Patch Notes
Free DLC: The challenge mode
The Challenge mode introduces a new area to explore, new puzzles to solve, and new robots to hack.
Here are the details on this challenge mode.
Free Update: Challenge Mode
You and your partner may have completed your primary mission, but you still need to keep your skills sharp! Explore the all-new Challenge mode to hone your communication skills, compete for medals, and even take control of new robot friends! Master your craft and work quickly if you want to collect every medal! Bronze, Silver, and Gold are all up for grabs… and for the most elite agents looking to prove themselves, there will be leaderboards on the Clever Plays Discord server!
Not feeling competitive? You can always just walk through each challenge at your own pace and enjoy the new content – there’s no time limit for those of you who like to take their espionage at a more casual pace.
The Challenge Mode features a whole new area to explore, ten trials to complete, and up to two hours of unique gameplay. This new content unlocks (for free) after completing the main Operation: Tango missions.