Adobe teams (Photoshop Camera Raw team and Lightroom team) released pre-production plug-ins for Lightroom.

As these are pre-production plug-ins, they are released to Labs.

Here are the two plug-ins that are released for Lightroom:

• Adobe DNG Flat Field plug-in — a tool used to correct an optical phemonenom called shading, also known as “lens cast”.
• Adobe DNG Recover Edge plug-in — a tool used to recover image data typically lost when using the in-camera crop mode.