Rozen Maiden anime has been confirmed to air this Summer. The announcement was originally found in the 17th issue of Young Jump magazine.
The project was initially announced back in November 2012.
Previous anime adaptations include: a two 12-episode television anime adaptations, Rozen Maiden and Rozen Maiden – Träumend, the two-episode prequel, Rozen Maiden: Ouvertüre in 2006, and a short special, Rozen Maiden: Detective Kun-Kun.
So you have 1 more season to pick up the Rozen Maiden series! Get your ass moving!