EA has released a second teaser trailer for the game, which appears to reveal naval combat.
Titled 'Prepare 4 Battle: Sea', the trailer shows a propeller spinning up on a ship, submarine or other type of marine vessel. Take a look at it below.
It's a similar clip to the one featured in the shorter teaser video released earlier this week.
EA has been ramping up activity on Battlefield 4 throughout the week in advance of the game's reveal next Wednesday.
Earlier today, code found in the game's official website revealed that Battlefield 4 would be heading to Xbox 360, PlayStation 3 and PC. However, EA later told VideoGamer.com that the text was placeholder, and that formats were still to be confirmed.
Battlefield 4 is due for a full reveal next Wednesday, March 27.