Didn't see an announcement anywhere on MR of this.
From Adobe:
Some nice enhancements IMO....
From Adobe:
New features to try in Lightroom Beta 3:
Before and After preview and History features in Develop to better preview and track changes
Live preview of HTML/Flash web output in the new Web module
Auto Import or Hot Folder for tethered shooting
Handling of PSD and TIFF image files
Additional resolution control when exporting photos
Straighten tool to correct camera angle issues
Saved module settings with Collections and Shoots
Keyword import and export
RGB Value readouts
Photo reordering within a Collection
More refined print options
Native raw support for new camera models including the Canon EOS 30D, Epson R-D1s, Leaf Aptus 65 and Aptus 75, Olympus EVOLT E-330 and SP-320, Pentax *ist DL2, and Samsung GX-1S
Some nice enhancements IMO....