ECF has produced a maintenance/bug fix release...version 3.5.3. Go here to download. As per maintenance releases, this release does not have new features or API, but does have bug fixes. Go here for 3.5 New and Noteworthy.
Additionally...some ECF committers have been working with the Restlet team to create an OSGi remote services provider based upon Restlet.
This shows the flexibility of the ECF implementation of OSGi remote services/RSA specifications...as any communications protocol (rest-based or not), can be easily used to create a standards-compliant remote services provider.