As I suspected, this is only an interface translation and iPhoneIslam said that the file and value existed in older devices.
plist files are XML files used to hold data in sets. This particular one holds translations for the Arabic keyboard, a feature missing from the Apple iPad.
One of the keys in the file is “UI-HWR”, which most likely means “User Interface – Hand Writing Recognition”, with the following value “ÙƒØªØ§Ø¨Ø© ÙŠØ¯ÙˆÙŠØ©” or “Hand Writing”/”Manual Writing”. You can see other keys such as: UI-Space, UI-Send, UI-Confirm, UI-EmergencyCall and so on.
Could Apple be working on Arabic Handwriting Recognition for the iPad? What is certain is that the next possible update for the iPad (probably 3.2.1) will unlock the Arabic keyboard as well as other languages missing from the iPad such as Traditional Chinese, Portuguese (Brazil), Portuguese (Portugal), Danish, Swedish, Finnish, Norwegian, Korean, Polish, Turkish, Ukrainian, Thai, Czech, Greek, Hebrew, Indonesian, Malay, Romanian, Slovak, and Croatian.
Don’t hold your breath for Arabic handwriting recognition though. It could be intended for Chinese and Japanese only.
Arabic version of this post on SaudiMac.net.