A while back we showed you Asus' teasers regarding its Z87 motherboards, two of which were the Z87-Deluxe and the Z87-Gryphton. Meanwhile, Asus has dropped some more teasers, with a closeup of the LGA1150 socket, under which we can clearly read the text "Intel Thunderbolt Certified."
Beyond this, yet another teaser was released showing the rear I/O of an unnamed motherboard showing two Thunderbolt ports. They can be clearly spotted next to the BIOS reset switch and underneath the HDMI port and two USB 3.0 ports. While the likeliness can be questioned, it is a possibility that Asus will equip most, if not all, of its Z87 motherboards with a Thunderbolt interface, since a Thunderbolt controller will be integrated into Haswell CPUs.
At Computex in Taiwan, we'll be seeing more of Asus' lineup. In the meantime, stay tuned for the undoubtedly more teasers to come.