Stage 1: Intel X79, hopefully 8Pack has one here
Stage 2: Intel X79 + NVIDIA, failing that a Z87
Stage 3: Intel Z87 + AMD
Stage 4: Intel various, but we've got scores here
Stage 5: AMD AM3/S939
Stage 6: AMD FM2/FM1
Stage 7: AMD FM2, anyone got an AGP here
Stage 8: Intel everything. Still need 1366, 1155, 1356 (+CPUs), S775 or a laptop here.
I'm not sure when their X79 Assassin is coming out: http://www.anandtech.com/show/7325/gigabyte-tease-x79-refresh-x79-g1assassin-3
But I'm sure if they sent over an A88X, an AM3 or a Z87 they'd all get used one way or another. A few socket 939 CPUs and boards would be a godsend for Stage 5.