Unreal Engine 4 unveiled

Epic Games unveiled the next generation of its world-renowned game engine, Unreal Engine 4. Unreal Engine 4's architecture and new visual features enable developers to see their creative visions come to life directly in game, allowing them to cut down on development time and iterations. The new version adds Hot Reload, a tool that allows you to quickly find and edit C++ code and see those changes reflected immediately in game; the all-new Code View allowing to browse C++ functions directly on game characters and jump straight to source code lines in Visual Studio to make changes; the new Simulate Mode that lets you run game logic in the editor viewport and inspect AI as the game characters perform actions; and more. For licensing information, visit this page. [source]