Thank you Lion, I think you mean the W-4. And indeed this happened (in fact they've been messing with the W-4 for a couple years - actually had a version which asked how much your spouse made). No one will have their 2020 tax liability changed because the W-4 was redesigned, but somehow they might expect someone to wish executing a new W-4. Like the ancient text from the Bible "straining at a gnat and swallowing a camel." All of us, including the IRS, would be better off spending time opening their mail which has been piling up.
Thank you Lion and Catherine for your interest in this wacky subject. This group is wonderfully helpful.