According to an announcement made on Twitter, Sony has confirmed that it will shut down the multiplayer servers for MAG: Massive Action Game, SOCOM 4 & SOCOM Confrontaton on January 28th 2014.This is an especially bold move to make, considering MAG is a multiplayer-only shooter, and the servers have only been active since January 2010...
For more info, head over to the MAG game pageSource:
Twitter