Sapphire 0.7 has been delayed in order to allow more time to stabilize extensive new features included in the release. Existing stable release 0.6.2 is going to be contributed to Eclipse Kepler release instead.
The major new work on the diagram definition language is still in the midst of stabilization. A new tentative release timeframe is September, to coincide with Kepler SR1, but it will ship sooner if the stability gets where it needs to be sooner.
I am afraid that 0.7 did not make Kepler SR1. Work continues on stabilizing the release. Adopters can help with this effort by thoroughly testing the latest builds with internal Sapphire-based features and/or samples.