Yes, you read that title correctly. The team over at SDX-Developers has achieved root on the Samsung Epic 4G, before the phone is even being sold. The process involves first establishing a temporary root, and then pushing a script that sets the root environment every time the phone is powered on.
It likely won’t take very long for a script-less version of the process to be released, but for now, those who are planning on buying an Epic 4G have an immediate root option. All the details can be found in the source link below.