Hmmm..seeing as how the specs of the Eris are absolute shit, it's hard to imagine the phone not having enough RAM, the right screen size/resolution, nor the 1 Ghz minimum CPU speed yet still being able to run 3.0.
I call BS. If it's true, that is quite remarkable. But think about what all had to be overcome in order to fit it onto a low-end device.
3.0 runs fine on my device and it's still in beta. OCing the hell out of the Eris still shouldn't bring it up to par with the N1 which is also running it smoothly.
Again, I'm calling BS, but if it's true....Google has some explaining to do about it's "minimum specs."