Official website:
http://www.snkplaymore.jp/official/nbc/index.html
Current (final?) roster:
Original: Yuuki, Ai
KOF: Kyo, Iori, K', Shermie
Misc: Marco, Mars People, Goddess Athena, Cyber Woo
Fatal Fury: Terry, Mai, Kim, Tung, Geese, Chonshu, Chonrei
MOTW: Rock, Hotaru
AOF: Robert, Mr. Big, Lee
Buriki One: Mr Karate/Ryo Sakazaki
Last Blade: Kaede, Moriya, Washizuka, Akari
Samurai Shodown: Haohmaru, Genjuro, Nakoruru, Asura, Shiki
World Heroes/AoDK: Hanzo, Fuuma, Kisarah, Mudman
Boss characters: King Lion, Mizuchi, Neo Dio
System:
A/B/C/D/E = LP/LK/HP/HK/tag
f,f = step
f, hold f = run
(f/b+) C+D = throw
C+D when thrown = throw escape
A+B when knocked down = recovery roll
f,f when blocking = guard step (1/2 stock)
A+B = tactical step (1/2 stock)
E while blocking = guard cancel tag (1 stock)

Auto-charge = power bar begins to fill by itself if you don't tag for 10 seconds
Hyper charge = your waiting character gets an attack bonus if you don't tag for 20 seconds
NGBC is currently scheduled for a summer release.