Yes, the wait is still 90 days. The update takes them about 15 seconds to complete. They pull up the account, click a button, punch a hole in your OHIP card, and print a paper that is to accompany the card when you use it. A few weeks later, they ship a new card.No, you still have the 3 months waiting period. But in Québec (I don't know for Ontario), showing CoPR before receiving the card would have change something on the card (I think the expiration date). We called RAMQ the week after my wife landed and they said we cannot do anything now because your card is in production today, but they told us, it doesn't matter, it doesn't change the services covered or anything, the change will be made when you renew your card next year.
You're drawing on my health informatics days now.... In Ontario, the cards have exactly the same numbers for the person, for their life. There is two letters at the end of the card number. This is called the "Version Code". That version code changes, once a new card is issued, or a "fundamental change" to the account occurs. It also doesn't change services covered. But, it's considered a fundamental change (temporary to permanent).