Seeing as no one has taken interest in Roberta's Blood Trail (the 3rd season of Black Lagoon) i feel i should let you all know that 3 episodes have been released and 2 more to go. Each episode consists of 33 minutes (+10 minutes than the old episodes) of same crazy insane action-packed madness.
OVA stands for Original Video Animation, and it's been decided that 5 episodes should be fitting until more episodes or seasons might be considered for production. The last episode (#5) will be released in may this year. The first 3 volumes are already on sale in Japan. Funimation announced at Anime Expo in July that it licensed Black Lagoon: Roberta's Blood Trail for North America.