Get your Windows all-in-one installer at http://sage2.sagecommons.org/v1-release/ or check the sources at https://bitbucket.org/sage2/sage2 (git checkout v1.0.0-Koolau)
Beta release
Today, November 24th 2014, the SAGE2 team releases a Beta binary distribution, focusing on a single node systems (with multiple screens) and opens the source repository for public access. Wiki pages and issue tracker are also open.