INFRA: Complete Edition is out now (also known as INFRA: Part 3). This update is the final episode of the game and includes a ton of new content.
To start, click "Continue" on the main menu if your last save was at the end of INFRA: Part 2. Otherwise you can simply click "New Game" and select "Late for a Meeting".
If you haven't played through INFRA: Part 2 yet, that's something you should do first, since your actions will affect the ending of the game. The "Late for a Meeting" chapter will unlock once you've completed INFRA: Part2.