The Pixel Mine Forums have a very brief update saying the Fireteam Reloaded servers will be shut down on September 30, saying: "We are going to shut down the server before we move to the co-location. Thanks to all the players who helped make this game fun to work on (2x)." With no details provided, we asked Pixel Mine the reasons for ending this multiplayer action revival/remake of Multitude's Fireteam, and received the following explanation:

Just like the original Fireteam, the Reloaded version just never found the audience we needed to sustain even the maintenance costs of the servers. Despite the game being free to play, people just aren’t that interested unless it has the latest and greatest graphics, which FTR obviously did not.