Thanks Paul, good information.
I also see that the initial Passport Cards are now issued and in the mail. They also have a new photo of the card on their website. I checked about getting one and looks like I'm better off waiting until I renew. It's a bit confusing just now, but look like they don't want to issue cards to those currently holding, but will issue a card with new passport applications and renewals. When I renew I'll get new passport booklet AND a card.