From Rockstar Newswire :
"Our apologies for the slight shift in the date but the game requires a few extra weeks of testing and polish to make it as good as can be," Rockstar writes on their newswire. "Moving a release date is never a decision we take lightly and is a choice we make only when we know it is in the best interests of the game and our fans. Thanks everyone for your understanding and we assure you these few extra weeks will be worth it when the game does arrive in March."
Rockstar has delayed the upcoming PC port of Grand Theft Auto V to March 24.