There are reports that at least one main style update will be made for the 2025-released Macs.

Apple’s entire Mac line is likely to be refreshed with M4-based products, starting late 2024.
Rumor Score is Possible
According to a new report, the Mac update cycle will continue through 2025 and include the M4 chip updates and at least one major design refresh. Apple’s M4 chip has only been installed in one Apple device, the iPad Pro. Apple’s next-generation M4 chip will be available for its Mac lineup in the near future, which will allow it to refresh its Mac hardware, both large and small, starting with the iMac and MacBook Pro. Apple’s move away from Lightning connectors will have an impact on the Magic Keyboards, Magic Mouses, and Magic Trackpads included in the accessories available for the iMac, as well as other devices. These accessories currently rely on Lightning-to USB-C cables to charge, but will likely be updated to use USB connectors. iMacs, Mac Minis, and MacBook Pros are not expected to undergo any major design changes. Bloomberg’s Mark Gurman writes that users who are eager for M4-based upgrades to the Mac Pro and Mac Studio will have to wait until 2025. Mark Gurman suggests that at least one upcoming revision will be a “dramatic” change from its current design. If this report is accurate, it’s the first indication that a Mac design could be changing sooner rather than later. The Mac Mini is the most likely candidate to undergo a major design overhaul. It has essentially had the same design since 2010 and only changed ports and connectors in line with industry trends. Some Mac products, such as the Mac Mini, the Mac Studio, and the MacBook Air at the lower end, never received the M3 processor. The M4 family of chips, which will be used in upcoming updates, is said to be much more powerful than the older M3. Early benchmarks indicate that the M4 family of chips will be significantly more powerful than the M3 in terms of graphics processing and Neural Engine.