I too am currently in the process of adding my spouse. I had the same situation as you when my passport request came. Got married and before updating my application I got the PPR email. I sent the passport alongwith updating them about my marital status. They said they won’t stamp it till they process the addition so I requested it back. I filled out all the forms and also sent upfront medicals of my wife. Now waiting for PPR2.
Here’s my thread Travelling to India and getting married after AOR