Release Candidates of Lightroom 2.3 and Camera Raw 5.3 are available at Adobe Labs.
The release includes camera support for Nikon D3X and Olympus E-30. There are also several bug fixes done in this release. Again, these are Release Candidates so make sure you go to Adobe’s User Forum to provide your feedback.
Links to the download:
One cool thing here is the Camera Raw installation. Adobe included a nifty installer so I no longer have to drag the Camera Raw file to the plug-ins folder! 🙂 Thanks, Adobe!
More info at John Nack’s Blog.