We are happy to announce the availability of Magento Preview Version CE 18.104.22.168-rc1 for download and upgrade.
This release is a Release Candidate preview version. It is NOT recommended to be used in any production environment (for more information about preview releases and the new community edition release process can be found in this blog post). The release is available on our download page, via SVN or for upgrade through the Magento Connect Manager.
As this is a Release Candidate we highly encourage extension developers to update their extensions to be compatible with this release.
Please report all issues with this release in the bug tracker.