iOS 11 Keyboard Layouts

A list of screen and hardware keyboards provided with iOS 11 can be found here. 

iOS 11 Arabic Font Problem

I have seen a number of complaints by Arabic users that the font used in iOS 11 has changed to the nastaliq calligraphy style often found in Urdu text, which they find very hard to read.  A possible fix is to go to Settings > General > Language and make sure that Arabic is higher than Urdu in the list of Preferred Languages.