In his excellent review, Challies confirms what most of us expected:
[Bell's] argument progresses to this: Because heaven will eventually come to earth, if we're to take heaven seriously, we must take the suffering that exists in the world seriously now. Therefore, we are called to participate "now in the life of the age to come. That's what happens when the future is dragged into the present" (p. 45). In light of this, humanity's role within creation is redefined so that we are not so much stewards as we are God's partners, "participating in the ongoing creation and joy of the world" (p. 180), and engaging in creating a new social order with Jesus (p. 77). This language of partnering and participating is frequently applied by Bell to causes of social justice.
But what about hell? Is hell a future reality or a present one? Is it an earthly reality or one that exists elsewhere?
Hell appears to be more about what we do to each other than what we've done to God. Bell reads Jesus' warnings of divine punishment as addressing only the temporal, rather than both the temporal and the eternal. These warnings were for the religious leaders of the day, and had very little to do with some other reality or some other time, he argues (pp. 82-83). Instead, hell is "a word that refers to the big, wide, terrible evil that comes from the secrets hidden deep without our hearts all the way to the massive, society-wide collapse and chaos that comes when we fail to live in God's world God's way" (p. 95). There's no fire and no wrath, at least, none that is extrinsic to us.
Does Rob Bell deny the existence of hell? He would say no. We would say yes. He affirms, but only after redefining. And that's just a clever form of denial.