Intel indicated that ovre the next three years they will stop manufacturing their own branded motherboards. Well, they actually purchase them from big ODM's themselves but yeah that production will stop. For Haswell there still will be a line of motherboards, but after that processor series is released they'll leave it to MSI, Gigabyte, ASUS and others. Intel will still make and design the chipsets of course.
Intel will continue to produce its own form factor reference designs for Ultrabooks and tablets. IMHO there never was a need for Intel to build motherboards anyway. This likely is a good thing for the Taiwanese motherboard manufacturers, as they have one competitor less.
