If you are planning to upgrade to GP 2015 and currently having Arabic text in your database need to be printed using report writer, make sure NOT TO UPGRADE to GP 2015.
Normally for printing Arabic text in report writer, if your keyboard language was not set to Arabic, the text will be displayed as rubbish data, see below example:
In order to get this printed properly, we used to switch the keyboard language to Arabic and the text will back to normal as below:
However for GP 2015, the system will automatically switch the keyboard language to English upon the generation of the report, and unfortunately the same switch is occurred upon hitting the print button, therefore the Arabic text will never be printed in Arabic and customers will start nagging!
Hope that Microsoft could resolve this soon!