I'm delighted to hear your wonderful words about QuickBooks Online (QBO), @Abubaker_Osman.

I know how relevant for you and your business to have a default Arabic language in QBO. I can see its importance as this helps you easily understand the message in front of your screen. However, we don't have a direct hold if this language would be added to the software in the foreseeable future. But I hear you and recognize your insights about having a big market in the Middle East. With this, I'm here to provide an alternative method you can perform to complete your task. 

I'd suggest adding the Arabic language from your browser settings. Then, make it the default one. This way, QBO will use this language moving forward. I'll guide you how. 

Here are the steps for Mozilla Firefox: 

1. Click the Three horizontal lines at the upper right.
2. Select Options. 
3. Scroll down to the page until you can see the Language section. 
4. Click the Search for more languages drop-down. 
5. Choose Arabic in the Select a language to add list. 
6. Hit Add. 
7. Use the Move Up button to make it as a primary language. 
8. Click OK. 

The screenshot below shows you the third to sixth steps. 

For Google Chrome: 

1. Click the Three lined dots button at the upper right.
2. Select Settings. 
3. Hit the three horizontal lines and go to the Advanced settings. 
4. Choose Languages from the list. 
5. Click Add languages from the drop-down and select Arabic. 
6. To change the browser language, select Display Google Chrome in this language. 

For Microsoft Edge: 

1. Click the Settings and more (three-dotted) button at the upper right. 
2. Select Settings.
3. Choose Languages from the left menu. 
4. Use the Add languages button so you can select Arabic. 
5. Check the Display Microsoft Edge in this language option.
6. Click OK. 

If you're using Safari, just go to the Apple menu. Then, select System Preferences and click Language & Region. You can add Arabic as the default language from there. 

For the time being, you can keep an eye on our QBO Blog site. You'll learn more about our latest news and product innovations from there. 

Also, I recommend visiting this website: Resource Hub. It provides you articles about managing your QBO account, income, expenses, banking, inventory, and taxes. 

Please know that you can count on me if there's anything else you need. I'm cheering on your continued prosperity while using QuickBooks, @Abubaker_Osman. Keep safe always. 

Thanks again,

Raymond Jay