Yesterday, I had a good hunch and started to look for some information regarding this anime. I came across with something interesting...
it seems they are going to change the seiyuu cast, being the new one as follows:
パンドラハーツ
オズ・ベザリウス：皆川純子
アリス：川澄綾子
鴉（レイヴン）：鳥海浩輔
シャロン・レインズワース：花澤香菜
ザークシーズ・ブレイク：石田彰
Oz Bezarius:
Junko Minagawa
Alice:
Ayako Kawasumi
Raven:
Kōsuke Toriumi
Sharon:
Kana Hanazawa
Break:
Akira Ishida
somebody made a
post with more information...