According to Moon Phase Zakki, a new Rozen Maiden anime will air in the winter season.

[アニメ]アニメ「ローゼンメイデン特別編」→「ローゼンメイデン オーベルテューレ」今冬放送予定。

銀様メイン?オープニングはALI PROJECT。

Gin-sama!

Moonspeak translated:

The new series “Rozen Maiden ~Oubertüre (previously Rozen Maiden Special Chapter) will be airing this winter.
Gin-sama (Suigintou) is rumoured to be the heroine. Opening is by ALI PROJECT.

Thanks to Cherryon from #animenano @ rizon for the help with the German (French?) bit. Let the O___O begin!

EDIT: Gah, looks like the title was wrong. I edited it.

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