A trio of Battlefield 4 screenshots found their way to the Battlefield blog and were picked up by Neogaf member L1NETT. The pictures have since been removed from the official blog, but they come directly before an EA event kicking off tonight, tied in with GDC 2013 in San Francisco.
EA announced Battlefield 4 in July, predicting a fall 2013 launch window; it will be set in modern times. We expect plenty more news about Battlefield 4 tonight. Update: We now have the official trailer.