Gemini Management implements the JMX Specification Version 1.0 of the OSGi Service Platform Enterprise Specification, Release 4, Version 4.2, section 124. This specification may be downloaded here.
We have recently released our first milestone and are working towards a full release and to exit Eclipse incubation status very early next year if not before.
Work is under way to update the JMX spec for Version 4.3 of the OSGi Service Platform Enterprise Specification and Gemini Management is tracking these updates and intends to be a complete implementation of the specification once released. The current public draft of these updates can be found here.