Announcement (March 19th). The new version will be released at the beginning of April (no certain date yet). Now we're testing the BETA version. The latest BETA version of nopCommerce is available on CodePlex site here (our repository). If you would like to participate in the testing portion of our development cycle and report bugs you find, this beta version might be for you. Just download the solution and run it.
P.S. This release is unstable and should not be used anyplace where your data is important.