Below you can see what Adobe says they fixed or added in LR 4.1. I put it in bold where they said it supports 5DIII.
Sorry if this is already well known and understood by 5DIII owners who do LR. Don't know if they may also need an update to CS5.
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Lightroom 4.1 is now available as Release Candidates on Adobe Labs. The ‘release candidate’ label indicates that this update is well tested but would benefit from additional community testing before it is distributed automatically to all of our customers. The final release of Lightroom 4.1 may have additional corrections or camera support.
Bugs Corrected in the Lightroom 4.1 Release Candidate
The following bugs that were part the Lightroom 4 releases have been corrected. The team appreciates the very detailed feedback the community has provided on Lightroom 4 and we’re excited to correct a number of issues experienced by our customers. These issues have been FIXED:
Point Curve adjustments made in Lightroom 3 and before have been restored.
Lightroom 4 did not properly open external applications when using the “Edit In” functionality.
Addressed performance issues in Lightroom 4, particularly when loading GPS track logs, using a secondary monitor, and the controls within the Develop module.
Ability to update DNG previews and metadata for more than 100 photos has been restored.
This update allows for improved viewing of subfolders and stacks in folders with a large number of photos.
It was possible that a layout of a saved book could be lost after quitting Lightroom 4.
Please provide feedback on your experience with the Lightroom 4.1 Release Candidate in our Feedback Portal.
New Camera Support in Lightroom 4.1 Release Candidate
Canon EOS 5D Mk III
Thank You
A big thanks to everyone who submitted bug reports, posted entries in the U2U forums and blogged their issues so that we could improve the Lightroom 4 experience in this update.
