Metro: Last Light and Company of Heroes 2 were originally slated to release in early, early 2013, but now both have been pushed back to March 2013.
South Park: Stick of Truth was scheduled for March 2013, but now will be pushed into early fiscal year 2014, which means April 2013 at the earliest.
The reason for the delays? Jason Rubin, President of THQ, has said that the games essentially need more polish, something that they want to take extra time for to ensure that the games are "market-ready." Considering how many games are often criticized for lack of polish, I think we'd all rather see games get delayed and release beautifully instead of on time and be riddled with bugs.