DirectX 11.2 an Xbox One and Windows 8.1 Exclusive
DirectX 11.2 promises to bring a host of new features such as the new "Tiled Resources" technique that will (unsurprisingly) be exclusive to the Xbox One and Windows 8.1.
At this year’s Build Developers Conference, Microsoft unveiled its latest version of DirectX, demonstrated the new "Tiled Resources" technique, and made the announcement that the update will be exclusive to Windows 8.1 and the Xbox One.
"Tiled Resources" allows for significant enhancement of in-game textures by making it possible to simultaneously access GPU and traditional RAM memory and create a single large buffer where large textures can be stored. This technique was demonstrated with a model of Mars which displayed a 3 GB texture using just 16 MB of GPU memory and in Graphine’s Granite Flight Simulator that showed "a remarkably detailed island with gliders constructed out of 64 megapixels."
DirectX 11.2 also promises to deliver a large number of other improvements such as more responsive improvements through reduced delay for applications run on top of an API, pre-compiling of HLSL shaders, GPU overlay support and frame buffer scaling.
We can’t say we’re particularly surprised by the announcement since Microsoft is clearly hoping this exclusivity will increase sales of the upcoming Xbox One console and motivate gamers to make the switch over to Windows 8.1.

You should realize that a lot of this has to do with old console hardware holding back the industry. We will probably see more support for stuff like this in the next generation.
Passed then, still passing now.
It creates HUGE development roadblocks because we have to continue supporting legacy systems and can't use new features. As long as people continue to use XP we have to support IE8 which means we can't use HTML5 or CSS3 because IE8 doesn't support it.
In Next-gen we will see games really taking advantage of DX11 and maybe then we'll see the benefits of 11.2
DirectX9.0c was released in 2004 and games started REALLY using it by 2007.
This is expected, it is called marketing and if a certain company can't provide anything 'spectacular' over the other companies, then it is doomed. DirectX 11.2 will surely drag more users towards Xbox One and Windows 8.1. I look forward to this.
And BTW. more and and games does take advantage of DirectX 11. Even more games will, as the upcoming consoles will feature DirectX 11 capable GPUs. So saying the DirectX 11 isn't used? Shame on you, seems as if you don't even know what effects it provides.