Apple officially opens ad bookings for businesses on Apple Maps ahead of an upcoming full rollout across the US and Canada (Ryan Christoffel/9to5Mac)

Ryan Christoffel / 9to5Mac : Apple officially opens ad bookings for businesses on Apple Maps ahead of an upcoming full rollout across the US and Canada &mdash; Ads are coming to Apple Maps soon in the US and Canada, and today businesses can start booking their own ads. Here are the details, including a limited-time promotional offer for businesses.