I don't know when Apple finally "came clean," but after years of agonizing over what to use to clean my display and never being satisfied with my results no matter what I decided on, I've finally found a definitive Apple doc.
70% isopropyl alcohol! Cheap, readily available, and will not damage your display as I've always feared it would.
The new Great Equalizer is the SEND button.
In Memory of Harv: Those who can make you believe absurdities can make you commit atrocities. ~Voltaire