Skulltrail (Intel D5400XS) was a great board, but a failure in terms of sales. AMD's "4x4" platform, which Skulltrail was developed to compete against. was also a failure. In short, the market for "enthusiast" (overclockable) dual-socket boards is too small. There has been and will be no successor to Skulltrail per se.
No dual socket 1366 boards offer CPU overclocking features.
EDIT: Umm... cough, cough.... with respect to a successor to Skulltrail... apparently I was wrong...
Message was edited by: bofors New information about a possible "Skulltrail 2" came my way. 5.11.10