Capcom Japan released a new game trailer of Street Fighter 5 from their YouTube Channel. On the trailer you can see new Characters added on the game, new special effects and fighting style. The game will be available on March 2016.
And here are some of the Character Introduction from Capcom
Cammy
Rashid
Ryu
Ken
R. Mika
M. Bison
Laura
Vega
Karin
F.A.N.G
Nash
Necalli
Zangief