Nvidia Optimus coming to Linux?

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http://ubuntuforums.org – I ready here that Nvidia has confirmed that it is working on Optimus so that it can be supported by Linux. This is great news, but what's the realistic outlook of this? When will the actual working drivers come out for Linux? I was unlucky enough to buy a powerful mobile GPU, the GeForce GTX 675m, but my computer's BIOS doesn't have the option to disable discrete graphics so I've never been able to use my GPU, except for with Bumblebee but it kind of sucks (it makes most games slower and less stable than with the CPU). So hearing the news that I may one day be able to switch between disc (Hardware)