New Features in Lightroom 5.2:

IzaemMoby - A Smoothness adjustment slider has been added to the Detail Panel under Color Noise Reduction. This helps to reduce low-frequency color mottling artifacts

Refinements to the Spot Healing Tool: 

1. New Feather control
2. Auto find source method now works better for images with textured areas like rocks, bark, and foliage
3. Auto find source method now prefers source areas within the crop rectangle
4. Auto Exposure has been improved to be more consistent across images and across different image sizes.
5. Smart Preview size has been updated to 2560 pixels on the long edge.
6. Refinements to the Local Adjustment Brush: 
7. Right Click (PC) / Control-click (Mac) on a brush adjustment pin to bring up a context menu to duplicate or delete
8. Control+Alt+Drag (PC) / Command+Option+Drag (Mac) on a brush adjustment pin to clone (duplicate) that adjustment

Newly added support for Tethered Capture in Lightroom 5.2

1. Canon EOS 6D
2. Canon EOS Rebel T5i / EOS 700D / EOS Kiss X7i
3. Canon EOS Rebel SL1 / EOS 100D / EOS Kiss X7
4. Nikon D7100

New Camera Support in Lightroom 5.2 

• Canon EOS 70D
• Canon PowerShot G16
• Canon PowerShot S120*
• Casio Exilim EX-ZR800
• Fujifilm FinePix HS22EXR
• Fujifilm FinePix HS35EXR
• Fujifilm FinePix S205EXR
• Fujifilm X-A1
• Fujifilm X-M1
• Leica C (Typ 112)
• Olympus OM-D E-M1*
• Panasonic Lumix DMC-GX7
• Panasonic Lumix DMC-FZ70
• Panasonic Lumix DMC-FZ72
• Pentax Q7
• Pentax K-50
• Pentax K-500
• Sony DSC-RX100 II
• Sony A3000 (ILCE-3000)
• Sony NEX-5T