Yup! You guessed it right! Kana Hanazawa, the girl who voiced Kobato, Suoh, Tenshi, Nadeko, etc etc from different known Anime titles will voice BLACK ROCK SHOOTER!
I am quite excited about it. For those who wonder also about Dead Master's seiyuu, it is none other than Miyuki Sawashiro. These two seiyuus have been working together on some anime titles so expect awesome voices from these gals as they bring huke's Black Rock Shooter and Dead Master to life!
Note: I would like to thank Kravius Zwei, my otaku friend for the info. ^^v
Images are from MyAnimeList and searched from Google Images