The new law has not yet been passed. A draft has been produced, which politicians will be discussing over the next while. We cannot say for sure when the law will pass and come into force. Once source I read guessed it would come into force after the summer.
I recommend you regularly check for any news about it. You will find more detailed and up to date news if you use German terms like 'Gesetz' (law) and 'Staatsbürgerschaft' (citizenship). Or check in here with us again.