iOS 27 is upgrading Shared Albums to full resolution, which sounds great, but the gotcha is that everyone’s uploads now count against your iCloud storage, not theirs, so if you share albums with family members who love to upload, you will want to check your storage limits before you tap that upgrade button. You have been warned, but whether you are listening or not will come out later when you get the “storage full, do you want to upgrade” notification.
Shared Albums were always a mystery to me. My family has a bunch of different shared albums from trips or holidays or other important events. And since I have 20-something-year-old girls, a single photoshoot typically consists of one pose with about 30 images. Then they are all shared so that the subject of the photos can review them and pick the best ones.
If you upgrade the Shared Albums to the new high-resolution ones, your iCloud storage could quickly evaporate. Be sure that those of you who use Shared Albums know this in advance!