Our I485 got approved two weeks ago and the cards have also arrived, 28 months after filing.
Just confirmed with my lawyer today that the WOM was the very reason that they approved it- my lawyer was going to have a call with the defense lawyer on Jan 18, but the case was approved on Jan 14. It would have been a longer waiting had we not filed the WOM.
Just FYI and good luck for those that are still waiting.