Xcode 7 allow Image Set Type to use subtype tag — Asset Catalog Format Reference.
Subtype tag have the following values: - Tag not included, the image is for a 3.5-inch iPhone screen. - retina4, the image is for a 4-inch iPhone screen. - 736h, the image is for a 4.7-inch iPhone screen. - 667h, the image is for a 5.5-inch iPhone screen.
But Xcode does show have any option to manage this tag. So how to manage it?
I filled a bug report to Apple and this is the answer;
This issue behaves as intended based on the following:
There is currently no publicly supported values subtype in the CAR file. Previously, this was used for R4, but that was retired when we stopped supporting the old 3.5” displays. Additional subtypes for the new 6 and 6s display were never defined.
We are now closing this bug report.