According to recent news, the iPhone 15 series will include: 6.1-inch iPhone 15, 6.7-inch iPhone 15 Plus, 6.1-inch iPhone 15 Pro and 6.7-inch iPhone 15 Pro Max. Of course, there are also claims that the iPhone 15 Ultra will replace the iPhone 15 Pro Max, in name.
In addition, due to the introduction of the relevant interface law in October last year, the EU requires that from the end of 2024, all electronic products entering the European market must use the Type-C interface. Therefore, this year's iPhone 15 series is almost certain of replacing the Lightning interface with the Type-C interface.Although the Lightning interface has brought us a cross-era experience, it makes sense that the Lightning interface should have retired a long time ago. After all, the transmission speed of Type-C is not only far higher than the Lightning interface, but there are not many digital products that do not support Type-C at present.
Finally, you only need to bring one type of cable to solve the charging needs of a number of devices including notebooks, headphones, iPads, etc., but you have to prepare another charging cable for the iPhone.

Last year, the Dynamic Island brought by the iPhone 14 series attracted the attention of many users, and it can be regarded as a very interesting innovation brought by Apple to users in recent years in the combination of software and hardware.
Although there were serious adaptation problems at the beginning of the release of the new device, many users complained. But over time, there are now third-party apps that support the operation and display of Dynamic Island, which is generally a good thing for consumers.  Currently, on the models of the iPhone 14 series, if you want to land on the island, you can only choose the Pro model. On the iPhone 15, according to the current foreign media reports, the flexible island design will be adopted on all iPhone 15 modelsAlso, starting with the iPhone 14 series, Apple began to make differentiated configuration allocations for the basic and pro models. According to a new report, on the iPhone 15 series, this differentiation will be widened again.

MacRumors recently summarized the upgrade points of the recently revealed iPhone 15 Pro, and concluded that the iPhone 15 Pro model may have the following six exclusive functions: 
It will be equipped with an A17 chip.
According to Nikkei Asia, the iPhone 15 Pro model will be equipped with an A17 Bionic chip based on TSMC's second-generation 3nm processor.
However, according to TSMC Chairman Liu Deyin, the A17 chip is mainly to further improve the energy consumption ratio. Therefore, the improvement in performance is likely to be minimal.
Increase memory to 8GB.
According to research firm TrendForce, the iPhone 15 Pro model will come with an added 8GB of memory, while the standard model will likely         continue to have 6GB of RAM as it currently does.

It adopts titanium frame.
According to Twitter-based Apple "LeaksApplePro", the frame of the iPhone 15 Pro model will be changed to titanium, instead of the stainless steel used before. There are also many advantages of titanium metal, such as light weight, high hardness, anti-allergy, corrosion resistance, etc. The disadvantage is that compared to stainless steel, the price will definitely be more expensive.
   
The Type-C interface is exclusive.
"Hey, hey, you clearly said above that all iPhone 15 series will use C port!!" Rest assured, not the kind of exclusivity that everyone understands ..... According to Ming-Chi Kuo, of MacRumors,  the iPhone 15 Pro model will be equipped with Type-C that supports at least USB 3.2 or Thunderbolt 3.
And Type-C on standard iPhone 15 models may be limited to USB 2.0 speed.
Solid-state buttons are back.
     
The news from Kuo, who said that similar to the solid-state home button introduced on the iPhone 7, the iPhone 15 Pro model will be equipped with two additional Taptic Engines, and users will provide haptic feedback when pressed.
In our opinion, if the iPhone replaces the physical buttons with touch-based buttons, it will not only better improve the waterproofness of the fuselage, but also further explore the iPhone's transformation to non-porous.
Camera enhancements.
     
According to sources, the iPhone 15 Pro Max will come with a periscope telephoto lens, which could give the device at least 6x optical zoom.
At about the same time, according to Nikkei reports, Sony has prepared a new generation of image sensors for Apple's iPhone 15 series, which seems to verify the reliability of the news.

In summary, based on the current information, Apple's first hybrid headset and iPhone 15 Pro series will be the most anticipated products this year. The iPhone 15 series may become the iPhone that has changed the most in recent years, both in terms of appearance, material and hardware. In addition, Apple may also launch new products such as iPads, AirPods, HomePods, and Apple Watch this year, but based on the current news, these products will not have much upgrade and change. Which product are you most looking forward to?