Doesn't look like this is a done deal. From the ESPN article:i think some of you guys are over-thinking this.
The reason the NBA is doing this seems quite simple and logical to me. The draft was moved from June to October, so it only makes sense that they'd also move the rest of the draft process forward to accommodate that. I mean, there's no need or reason to keep the old declaration deadline if the draft's not gonna happen until October, right?
"The new deadline is pending the NBA finalizing an agreement with the players' union on system rule changes in the collective bargaining agreement related to the resumption of the 2019-20 season."