Over at the Adobe Labs Lightroom site, the beta for Lightroom 2 is now available. John Nack revealed that among other things (release notes PDF) version 2 will feature 64-bit support as well as a new Retouch tool. This marks a shift toward selective editing similar to the new editing plugin architecture that made its appearance with Aperture 2.1.
The Lightroom 2b1 is available for download to "all current Lightroom customers." New customers "can download the beta and try it for thirty days" or hit up a friend who already owns it. It's worth noting that the beta "does not read, upgrade or import catalogs from previous versions of Lightroom" and you should keep using 1.3.1 "for your primary workflow needs."