Version 2.0 was released on 30.06.04. However, an ebuild for it does not exist. Reproducible: Always Steps to Reproduce: 1. 2. 3.
See bug #56598 -- Sandro
We are working on this. There's little point in packaging the binary-only version, as it's not platform-independent. This can obtained using the Eclipse Update Manager anyway. We want a proper from-source ebuild, which turns out be a quite tricky to get right, given current time constraints.
It's in there, but very untested. Please look at dev-util/eclipse-sdk