Sharad Mangalick, Lightroom Product Manager, has announced the availability of Lightroom 5.3 RC on Adobe Labs.
Issues when upgrading catalog from previous versions of Lightroom.
Incorrect photos are displayed after switching away from a Publish Collection.
Catalog optimization did not finish, and was not optimizing the catalog
Feather of clone spots is set to 0 after upgrading catalog to Lightroom 5.
Auto White Balance settings are not saved to Snapshots.
Sony 18-55mm lens is detected as the Hasselblad 18-55mm lens for lens correction.
Increased Update Spot Removal history steps when in Before and After view.
Slideshows start playing automatically even when the Manual Slideshow option is enabled.
Video playback stops when dragging on the scrubber.
Errors when publishing photos to Flickr through the Publish Service.
Option + drag on Edit Pin behavior is functioning incorrectly.
Black border appears around the exported slideshow video.
Catalog containing images processed with PV2003 were adding a post-crop vignette when catalog upgraded to Lightroom 5.
Pressing the “Reset” button while holding down the Shift key caused Lightroom to exit abruptly.
Output Sharpening and Noise Reduction were not applied to exported images that were resized to less than 1/3 of the original image size.
The Esc key did not exit the slideshow after right clicking screen with mouse during slideshow playing.
Import dialog remained blank for folders that contain PNG files with XMP sidecars.
Metadata panel displayed incorrect information after modifying published photo. Please note that this only occurred when metadata was changed after the photo was published.
A corresponding Release Candidate of Camera Raw 8.3 has also been announced.
Bug fixes include
New Camera Support in Lightroom 5.3 Release Candidate
Canon PowerShot S120
Nikon 1 AW1
Nikon Coolpix P7800
Nikon D5300 (*)
Olympus OM-D E-M1
Olympus STYLUS 1 (*)
Phase One IQ260
Phase One IQ280
Sony A7 (ILCE-7)
Sony A7R (ILCE-7R)
Sony DSC-RX10 (*)
* denotes preliminary support
New Lens Profile Support in Lightroom 5.3 Release Candidate
Canon EF-M 11-22mm f/4-5.6 IS STM, Nikon 1 NIKKOR AW 11-27.5mm f/3.5-5.6, Nikon 1 NIKKOR AW 10mm f/2.8, Nikon AF-S NIKKOR 58mm f/1.4G, Sigma 18-35mm F1.8 DC HSM A013, Sigma 18-35mm F1.8 DC HSM A013, Sony E 20mm F2.8, Sony FE 28-70mm F3.5-5.6 OSS