From the announcement:
Today, the Omeka team is releasing the first major point release for Omeka S: 1.0. It is available for download today. We are also revealing a redesigned, Omeka.org, which represents a major undertaking of effort that has happened at the edges of all other pressing design, development, and outreach work.
One year following the Beta, the release of Omeka S 1.0 demonstrates the stability of the platform.
Created with funding from The Andrew W. Mellon Foundation and the Institute of Museum and Library Services, Omeka S is engineered to ease the burdens of administrators who want to make it possible for their users easily build their own sites that showcase digital cultural heritage materials and share those resources as linked open data.
Read the full announcement here.