Will the New Earth be a return to Eden and will we become like Adam and Eve were?
Returning to the prefall-Adamic state is not our destiny. The glorification we'll experience in the resurrected state will entail the righteousness of Christ which is far beyond the innocence known by Adam and Eve. But the Curse placed on the Earth because of the fall will be removed and the natural world will have an Eden-like quality, as we see from Revelation where the Tree of Life that was in Eden will be on the New Earth.
For more information on the subject of Heaven, see Randy Alcorn’s book Heaven.