Considering that it was the Congregation for the Doctrine of the Faith (aka the Holy Office), headed by Benedict XVI, then Josef Cardinal Ratzinger, which enthusiastically stripped Hans Kung of his license as a Catholic theologian early in the pontificate of John Paul II of happy memory, one rather doubts that there will be any, even the slightest, rehabilitation of Hans Kung unless Kung strips himself of his infernal id and his heresies and his unearned pride and his resistance to Truth and then engages in public physical penance of Biblical proportions.
I'm still betting that the two are old pals.
After all, Kung's only crime was in disputing papal infallibility. See below....Link to Quote
Ratzinger goes on to support Kung's position versus the Theology of Rome, of which today he is the top representative... He stresses:"I want to emphasize again that I decidedly agree with Kung when he makes a clear distinction between Roman theology (taught in the schools of Rome) and the Catholic Faith. To free itself from the constraining fetters of Roman Scholastic Theology represents a duty upon which, in my humble opinion, the possibility of the survival of Catholicism seems to depend" (Ibid., p. 101, last text highlighted at right).