Kalypso Media announces the release of a new teaser trailer for Tropico 4, the El Presidente simulation sequel in development at Haemimont Games. The announcement also reveals the plan to release the game this August for Windows and Xbox 360, which represents a slight delay from the game's originally announced release window of Q2 of this year. They also reveal more details about the game, including Facebook and Twitter integration in the Windows version. Here's a bit on gameplay: "Tropico 4 will challenge players to negotiate with new global super powers, while dealing with interactive natural disasters and pushing through their own edicts via the new national council features. With 20 new missions spread over 10 new maps, players will spend dozens of hours crafting an island paradise, while sharing their successes via Twitter and Facebook." Here's the embedded version of the clip.