New info from NeoGAF:
Amazon has the Classics up for pre-order $24.99 each
Vol 1 -Metal Slug 2, Sengoku, Top Hunter
Vol 2 - Samurai Shodown 3, Savage Reign, Super Sidekicks 3
Vol 3 - KOF 96, Blazing Star, Kizuna Encounter
Vol 4 - Garou MOTW, Shock Troopers, World Heroes 2 Jet
Vol 5 -The Last Blade 2, Art of Fighting 3, Breakers Revenge
Release date 4/25/13
http://www.amazon.com/Neogeo-Classic...geo+x+classics