I doubt an official announcement will be made as apparently they want to drop it quietly but also to let the people know at the bottom of the chain (passport police). Also was told that all those on the current 90/180 days will be allowed to visa jump.
As I said, this is in the internal channels at the moment so could take a week or 2.
Also was told that it was expected to be dropped, not that it is definet. Turkey has to sort this out itself and doesnt want to be seen to bow down to outside pressure.