The social network is the latest to promote the decree in order to keep up with the particularly improved 2048 x 1536 screen.
The clearest result of the improved graphics will be better photo and HD video viewing capabilities, offering more detail and clarity than ever before.
Facebook is also bringing a host of small changes, promising bug fixes for the much-maligned iPad app, which took a full 18 months after the first age group device launched.
Carrying skill to go offline in chat mode and step up to friends lists, name-tagging in photos and a host of new display languages.