From Adobe: Sep 12, 2013
– Preview 2 of both plug-ins is now available for download. This release enables installs on 32-bit operating systems. Download DNG Flat Field plug-in
(Preview 2)Download DNG Recover Edge plug-in
The Adobe Photoshop Camera Raw and Lightroom teams will occasionally release pre-production plug-ins that extend existing functionality inside Lightroom.
These plug-ins are provided free of charge, but without an official support program.
Like other technologies on Adobe Labs, these tools are not finished products, but rather beta or prototype utilities that may work in your particular environment. Available Plug-ins for Photoshop Lightroom
The following list comprises all of the resources that are currently available to download. More tools and utilities may be added in the future.
Adorama carries Adobe Photoshop Lightroom.