we need to update the planned release date. We are currently working on some stuff that definitely needs to be released with 1.0.0. There are some business requests and the promised viewport modifications that should be included to that release. We also hope that GlazedLists 1.9 will be released final and be added to Orbit so we can change our dependency management and build process. So with 1.0.0 we hopefully will be able to support a p2 update site without any further manual actions for users of the NatTable.
So, no unfortunately there is no fixed release date at the moment because of several dependencies. But hopefully it wouldn't take too long. We keep you updated on this.