The NBA and NBPA have long been expected to revert back to its previous rules allowing high school players to enter the draft, Adrian Wojnarowski of ESPN has tried to walk back earlier reports indicating an agreement will be reached.
The NBA is attempting to bargain for player agents to be forced to provide medical information and physicals to all 30 teams as part of the draft process. Currently, agents can exert control over who they share that information with in an attempt to direct their clients away from teams they would prefer to avoid.
Those conversations between the NBA and NBPA have yet to begin and will be part of their larger CBA negations.
Also, if the one-and-done rule is changed, the expected starting date will likely be several years into the future. The first year where high school players are allowed to enter the NBA directly will essentially create a double draft.