Can you sense the anticipation building? We're just a few short hours away from Apple's most significant event of the year. On Tuesday, September 12th, at 10 a.m. Pacific Time, Apple will unveil its latest offerings in a pre-recorded keynote broadcast at the Steve Jobs Theater. The event will also be streamed worldwide via apple.com, the Apple TV app, and the Apple YouTube channel – you can set a reminder for it here.

The focal point of the keynote will undoubtedly be the iPhone 15 series, but there's also mention of a redesign for the AirPods Pro, featuring a USB-C connector in the case.

Then, there's the highly anticipated Apple Watch announcements. We can expect the Apple Watch Series 9 in two sizes, retaining the 41mm and 45mm cases, along with a potential surprise – a second-generation Apple Watch Ultra, possibly available in a fresh and vibrant color option. These new watches are slated for release on Friday, September 22nd.

While the Series 9 may not bring significant changes in terms of design, it's expected to introduce internal enhancements. Reports suggest a notably faster processor, but it appears there's more in store.

Mark Gurman's recent report for Bloomberg sheds light on what to expect from these new Watches. He confirms the focus on performance, stating, "The Apple Watch's main highlight this year will be its enhanced performance, with Apple planning to emphasize substantial improvements in processing speed," marking the most significant leap since the Series 6.

The increased processing power may enable new features, possibly expanding the use of the temperature sensor introduced last year.

Gurman also hints at a new version of Apple's optical heart rate sensor, marking it as a fourth-generation sensor. While specific details are scarce, enhanced accuracy is a probable outcome.

Furthermore, a new sensor is on the horizon – the U2 ultra-wideband chip, likely making its way to the new iPhones as well. This chip is expected to enhance Find My capabilities.

Gurman mentions a potential shift in the manufacturing process for the Watch, with some stainless-steel models possibly being produced using 3D printing, an exciting development though not yet widespread.

Lastly, Gurman suggests that Apple might discontinue leather Watch bands and even the stainless steel link bracelet, signaling a year of subtle yet significant changes for the Apple Watch