A _preview_ of release artifacts for 0.8 are at https://repository.apache.org/content/repositories/orgapachemahout-113/org/apache/mahout/. This is not an official release. I will call a vote in a day or two, pending feedback on this thread, so please review/test.
A _preview_ of the release notes are at https://cwiki.apache.org/confluence/display/MAHOUT/Release+0.8
