This is not built yet. The article says what exists today and what is still to come — nothing here promises a date.
Not yet. Card payments arrive with checkout, which has not launched. Today plans activate instantly with a code on the Upgrade page, the Billing page shows the real plan state, and Billing history says plainly that invoices will collect there once card billing launches — access-code activations do not create invoices because there is nothing owed. When billing launches we will say so clearly and give existing families plenty of notice.