Updating Coverage? maps is a very labor intensive process that takes a lot of time and bandwidth. Even with them now being provided by Mosiak Solutions.
By the very nature of our apps, the updates will always be a bit out of date by the time they reach your device.
Mosiak pushes new maps to us every quarter, which we push as in-app updates for HD Map subscribers ASAP. We release new standard map updates via app updates as needed (generally 2-3 times a year.)