Apple will hold its much-anticipated launch event at Apple Park tomorrow, September 9, unveiling the iPhone 17 lineup — which executives have reportedly described as the “most ambitious in the product’s history”.

One of the biggest shifts is the rumored replacement of the struggling Plus variant with a new iPhone 17 Air, also referred to as the Slim model. At just 6.25mm thick, it could become Apple’s thinnest phone yet, overtaking the iPhone 6. The Air is expected to feature a 6.6-inch display, a single 48MP rear camera, and at least 8GB of RAM to support Apple Intelligence. But leaks also warn of drawbacks: a smaller 2,800mAh battery and concerns about durability. Apple is reportedly allocating only 10% of production to this model.

The Pro Max may also be renamed the iPhone 17 Ultra, and could introduce three 48MP rear cameras with periscope-style Tetraprism zoom. All four models are rumored to get 24MP front-facing cameras, dual video recording, and possibly smaller Dynamic Islands thanks to new Face ID “metalens” technology.

On design, the series will reportedly bring bigger changes than recent generations. Camera bumps are expected to become horizontal and stretch across the back of the Pro models, with color-matched finishes rather than two-tone designs. Color leaks suggest new options: Light Blue and Gold for the Air, Orange for the Pro line, and a mix of familiar shades like Silver, Black, and Green across the range.

iOS 26 also debuts alongside the new phones, introducing a translucent “Liquid Glass” theme, a new Games app, spam-blocking tools, and enhanced battery insights. Analysts say it could also pave the way for Apple’s eventual smart glasses interface.

On displays, rumors indicate 120Hz refresh rates for all models, though it’s unclear if the base and Air will receive adaptive ProMotion panels. The Pro and Ultra are expected to retain 6.3- and 6.9-inch displays, while the standard iPhone 17 may grow slightly to 6.3 inches.

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Battery life could diverge sharply: reports suggest a massive 5,000mAh unit for the Pro Max — the largest ever on an iPhone — but a below-3,000mAh battery for the slim Air. Faster 35W charging and possible reverse wireless charging may come to Pro models.

Pricing rumors are mixed, but consensus points to Apple largely holding steady, with only the Pro model seeing a hike due to a new 256GB minimum storage tier.

In summary, tomorrow’s event is expected to confirm Apple’s thinnest iPhone ever, its biggest battery to date, and an AI-driven OS overhaul — making the iPhone 17 series one of the company’s most closely watched launches yet.