I suggest the NYTimes is making it up. The fellows in Guantanamo already get Geneva Convention standards of care.
The guards were moved out of hard barracks because the Geneva Convention requires that detainees be housed in a manner commensurate with the detaining power soldiers. The guards have been used as the standard for that.
There is no change. They can be held indefinitely. The SCOTUS gave the administration everything they wanted, except some details about how one would have war crime trials, which normally don't begin until after the war is over. No sweat, we will still be there.
Ralph Peters mentioned one possible change in US approach towards unlawful combatants consistent with the Geneva Conventions in yesterday's NY Post - refuse to accept their surrender in the field and kill them in place. I like that.