UPDATE: Additional Pages are no longer added to your passport –
Additional pages are no longer added to existing passports. If you have run out of blank pages in your current passport, you will need to submit an application for a new passport. All new passports issued abroad contain 56 pages.
New passports are normally processed within 10 work days.
Most countries in the Asia region require at least six months validity in your passport in order to travel. Thus, please apply well in advance of your passport expiration date.