<Update: Capcom has confirmed Ryu will be available as DLC on the 8th May, and Akuma on 15th May. Both DLC packs will cost 160 MS points each and €1.99 / £1.59 on PSN.>
It seems that Street Fighter's Ryu won't be the only downloadable content coming to Asura's Wrath from the fighting series - recurring villain Akuma will be joining him.
Akuma will be available as downloadable content for $2 USD on the 15th May. Ryu will be released on the 8th May for the same price. Both DLC will be added as "chapters" in the game.
Asura's Wrath was released in early March in Europe, and earned a 7.0/10 score in Strategy Informer's .