We do produce a p2 repository as part of our build, but since Orion itself doesn't currently include p2 we haven't had a lot of use for it. Integration builds are still posted to this repository:
Our builds are currently broken so it is empty, but typically this contains the last 4 integration builds. We have no equivalent repository for releases, but you're welcome to enter a bug for that if you would find it useful. And yes, I should also really remove the "0.3" from that repository URL at some point.