The Walking Dead shooter from Payday 2 developer Overkill was announced back in 2014, and we've only had a small taste of the project since. It was initially set for a 2016 release, but a recent announcement from partner Starbreeze brings news of a delay.
The announcement is actually about something else: Starbreeze's new relationship with Korean gaming company Smilegate. However, later in the announcement, we see this:
OVERKILL’s The Walking Dead will be expanded with more content where an Asian version will be developed for simultaneous launch with the western version. To maximize the new opportunities, Starbreeze, 505 Games and Skybound have decided to release the game in all markets during the second half of 2017.
That's a long delay, and what the "more content" could be isn't specified. Hopefully we'll see more information about the game soon.
[Source: Starbreeze via GameSpot]
Remember that delays aren't necessarily bad. It stinks to wait longer to play a game you're excited about, but developers use the extra time to polish and refine the game to deliver a better experience (usually). Barring some sort of cultural disaster, The Walking Dead won't stop being popular next year, so the game will likely still be able to capitalize on its fanbase.