We just released a new version of Block Manager for AutoCAD. This new version can work with the newest AutoCAD 2012.
AutoCAD 2012 Features:
Design and shape the world around you with AutoCAD® software, one of the world’s leading CAD programs. Explore ideas more intuitively in 3D, speed documentation, share ideas seamlessly, and customize AutoCAD for your specific needs.
With new and updated tools for 3D conceptual design, model documentation, and reality capture, AutoCAD 2012 helps design professionals maximize productivity.