Adobe have released a public beta for Photoshop Lightroom 3. From a DAM perspective import has been improved to match/restore the original, LR3 separates tasks (import, export, etc) for better efficiency and reliabilty. LR3 aims to offer the best quality in noise reduction, allows one click photo sharing, and a picture package option in the Print module.
If you want to try the LR3 beta consider the Catalogs disposable and only use sample images. This is a very rough beta. Adobe want your feedback. Of course there is more to come in the final release and you can help shape that.