iOS 7 is just around the corner, and Apple wants everything ready before its launch. That’s why it’s emailing some developers to update their application icons to larger ones that iOS 7 requires to look its best on the home screen. Remember that this new version of iOS uses a new mask with more rounded corners.
After the impending launch of iOS 7, and the countless tests Apple has done to fine-tune it, it’s now up to the developers to improve their applications. The most important ones will surely have theirs almost ready waiting for Apple to open the doors in iTunes Connect. So, outlining the latest details, Cupertino is sending emails to all developers to upload larger versions of their icons to the App Store.
Yes, iOS 7 uses a different mask over the icons, because if you didn’t know that, the developers create square icons, and it’s iOS that rounds off the corners. That is why now in iOS 7 any old application shows the new borders . The problem is that the system now uses larger icons, and in older applications, an almost imperceptible white border is displayed.
Therefore, the icons for iOS 7 that are now included in applications will have to be 120×120 pixels on the iPhone (up to iOS 6 was 114×114 pixels), and 152×152 on the iPad (up to iOS 6 was 144×144 pixels).
Although there is no explicit mention of iOS 7 in the mail, it is more than understood that these resolutions are for the new Cupertino system, and that they also meet the new requirements of this seventh iteration of iOS. And these emails seem to be a mistake, since Apple has not yet opened the deadline for uploading applications ready for iOS 7, but perhaps it was a mistake on purpose for those who leave their applications adrift to get their hands on them and prepare them to look good.