Apple has announced that both iPhone 6 and iPhone 6 Plus will be available in 36 more countries, including key markets like India and China, by the end of the month, bringing the total number of countries where the newly launched smartphones will be available in to 69.

Starting October 17, the new iPhones will be available for sale in India, China, and Monaco, followed by Israel on October 23, and countries like Czech Republic, French West Indies, Greenland, Malta, Poland, Reunion Island, and South Africa, the very next day.

On October 30, the devices will go on sale in Bahrain and Kuwait, while consumers in Albania, Bosnia, Croatia, Estonia, Greece, Guam, Hungary, Iceland, Kosovo, Latvia, Lithuania, Macau, Macedonia, Mexico, Moldova, Montenegro, Serbia, South Korea, Romania, Slovakia, Slovenia, Ukraine, and Thailand, will be able to purchase Apple's new smartphones on October 31.

Calling it "the fastest iPhone roll out ever", the Cupertino-based company said it is on track to offer the new iPhones in more than 115 countries by the end of the year.

The iPhone 6 and iPhone 6 Plus first went on sale on September 19 in the US, Australia, Canada, France, Germany, Hong Kong, Japan, Puerto Rico, Singapore, and the UK, followed by a second wave of launches on September 26. Apple said it sold more than 10 million iPhones over the opening weekend, breaking the previous record of nine million with the launch of last year's iPhone 5s and iPhone 5c.

The news comes just a few days ahead of Apple's upcoming media event this week, at which the company is expected to unveil new iPads and Macs, as well as release its OS X Yosemite operating system.