DirectX 11 will be presented at the upcoming nVision 2008. Among the news features, there will be tessellation, multithreaded rendering, compute shaders, Shader Model 5.
Leadwerks Software has released a paper describing their experience implementing deferred lighting in the OpenGL-based Leadwerks Engine. The paper includes some GLSL code for reconstructing screen space positions without need for a position float buffer, as well as a few results surprising to the author.
This paper is available HERE – PDF