"Ultrabook" currently specifically refers to a system with a Sandy Bridge or Ivy Bridge based ULV CPU, all of which have integrated on-die GPUs.

Re the announced system: interesting - does Optimus work on Linux these days then? Last time I checked, the GPU on Optimus systems was dormant on Linux.

Ever since Acer Aspire ultra book came out with nVidia GPU, it's no longer the case.

Optimus is not used on Linux.

So have they basically disabled the intel GPU then?