Apple’s upcoming iPhone 6s and 6s Plus became available for preorder on Saturday, and after unprecedented demand the company looks set to enjoy its best ever opening weekend sales record.

In a statement to CNBC, Apple said it was “on pace” to eclipse last year’s record of 10 million preorder-weekend iPhone sales. That’s a lot of phones, and with some analysts claiming Apple make over $500 per iPhone sold, it’s also quite a lot of money.

The iPhone 6s and 6s Plus look identical to last year’s models, but include an improved 12MP camera that shoots 4K video, Apple’s new 3D Touch input technology, new features like Live Photos, and a performance bump thanks to upgraded processor and RAM.

Read more: Apple unveils iPhone 6s & iPhone 6s Plus

After huge sales figures at the launch of the iPhone 6 and 6 Plus last year, Apple promise to have more stock available this time around to try to avoid launch-day disappointment.

The new iPhones are released on September 25, and are available for preorder now.