So, just how thin will future touch screen ultrabooks get? Intel provides plenty of guidance on how to get there.
Ultrabooks these days typically range between 17mm (0.66 inches) and 20mm (0.78 inches) in thickness. With the emergence of Windows 8 tablet-esque ultrabooks with touchscreens, Intel wants to shave off a few more millimeters.
At its annual conference today, Intel released a slide (above) showing a touch screen ultrabook with a thinly-sliced 2.5mm keyboard (Microsoft's Surface tablet has a keyboard that is 3mm thin by comparison), a sub 0.5mm touch panel, and a 5mm hard disk drive.
It just so happens that Western Digital has been teasing a 5mm hard disk drive this week.
And that's not all. Intel will be offering future "Haswell" 4th Generation Core processors next year that are rated at 10 watts and below -- low-heat, power-frugal chips perfectly suitable for ultrabooks of these dimensions.
There will also be limited availability of current "Ivy Bridge" chips at 10 watts, said Rob DeLine, director of Ultrabook product marketing today in an interview.
And let's not forget Microsoft's upcoming Intel-based Surface tablet. That will be a mere 13.5mm thick.
Acer also has a very skinny ultrabook on the way. Its upcoming sub-15mm-thick (that's less than 0.6 inches) Aspire S7 is due by October.