Madhouse is doing another season of (High school of the Dead). The same guys are responsible for (BTOOOM), at least to my understanding. (BTOOOM) didn't do well in Japan, but a lot of the westerners liked it. They haven't said anything about another season, and of the three they oversee, (DeathNote) was the only Anime finished. They recently confirmed another season of (High school of the Dead), so after that they might do a second season for (BTOOOM). I hope they do, as I'm a fan of all three shows.