This is pretty much news that should have been known already but may as well gives the alert the ones that want to keep track of everything. Sally is getting a new look. The reaction to this change of it is the usual default: angry, crying, and are willing to threaten. As I would like to make statement of fan bases repeating behaviors I will skip the scolding since someone else did would have done it for me and think about why the change.
As you know Eggman did a number on the Mobians and Sonic. I think the change will show a reminder of the damages what he has done and can be explain from her previous appearance which at this date is now this
You have to admit when she become deroboticized some things would have taken effect.