Starting with the iPhone 3GS, every new iPhone has started with 16GB of storage as a base model — a capacity that has come under increasing fire as both videos and apps have grown in size. Despite new capabilities and the presence of 4K video recording in the new iPhones, sources say that the new iPhone 6S and iPhone 6S Plus will retain the same storage tiers as the current iPhone 6 and iPhone 6 Plus: 16GB, 64GB, and 128GB. On-contract pricing will also be the same as the 2014 models: $199, $299, and $399 for the iPhone 6S, versus $299, $399, and $499 for the iPhone 6S Plus. We previously posted images of pre-production next-generation iPhone components that indicated that the 16GB option could remain.

As we recently reported, the iPhone 5s will remain on sale as the on-contract “free” model, while the 2013 iPhone 5c will be discontinued. While a 4-inch iPhone 6c has been in the works, sources do not expect such a device to be unveiled at the September 9th event. We’ve also confirmed that the new iPhones will use the stronger 7000 series aluminum first found in the Apple Watch Sport. Here is how Apple explains this custom alloy:

For Apple Watch, we created a new alloy of 7000 Series aluminum that’s 60 percent stronger than standard alloys. Yet it’s very light. Together with the Ion-X glass covering the display, it makes the Sport collection watches up to 30 percent lighter than our stainless steel models. It’s also exceptionally pure, with a beautifully consistent appearance that’s difficult to achieve with traditional aluminum alloys.

Speaking of the Apple Watch, we’re told that new Apple Watch Sport band colors will launch on the 9th. The new colors could be the same as or similar to the wider variety of sport bands Apple’s Chief Design Officer Jony Ive showed to small audiences at private Apple Watch events earlier this year.

The iPhone 6S and iPhone 6S Plus will retain the design of the current models, but will include several new features, according to sources. The new smartphones will include Force Touch-based displays for shortcutting popular iOS features, 12 megapixel rear cameras that can record 4K video, upgraded front cameras, faster A9 processors, 2GB of RAM, animated wallpapers, and a new Rose Gold color option. The new iPhones are expected to go on sale in retail stores on September 18th.

Top image: Getty Images