I'm also waiting for this. My return is complete and ready to file, except for that one deduction.
As a tax credit that likely affects the majority of the country, it's frustrating this wasn't ready for the beginning of tax season.
Edit: at the time of this post I didn’t realize we couldn’t file with CRA until Feb22 and I thought this was holding me up. Good reminder to get all the facts before letting myself get so annoyed.