I still cant quite believe that Im using an Arm-powered Windows laptop every day. After more than a decade of trying to make Windows on Arm a reality, Microsoft and Qualcomm finally nailed it this year with Copilot Plus PCs. These new laptops have excellent battery life and great performance and the app compatibility issues that have plagued Windows on Arm are mostly a thing of the past (as long as youre not a gamer). Microsoft wanted 2024 to be the year of the AI PC, but I think it was very much the year of Windows on Arm. If 2024 was anything to go by, 2025 is going to be even bigger for Windows on Arm.Microsoft set the stage for the 2024 year of Windows on Arm announcements in January at CES with promises of AI PCs and the first big change to Windows keyboards in 30 years. Laptop manufacturers started putting a Copilot key on keyboards early this year, providing quick access to Microsofts AI assistant. While the Copilot experience on Windows has gone through several confusing revisions, its still a key I accidentally press and then get frustrated when a Copilot window appears.After the Copilot key was met with a lukewarm reception, Microsoft reignited the Mac vs. PC war a few months later. Inside Microsoft, confidence had gradually been growing throughout the early months of 2024 that it could finally beat Apples MacBook Air after falling behind for years. Microsoft CEO Satya Nadella unveiled the companys new Copilot Plus PC devices at a special event in May, setting the stage for a summer of Windows on Arm laptops from every major OEM.The processor is the keyThe key to Windows on Arms revival this year was Qualcomms Snapdragon X Elite processors, which were announced in April. Theyve provided the type of performance and power efficiency only previously available with Apples MacBooks and challenged Intel and AMD to do better in the x86 space. After much debate over Microsofts MacBook Air-beating benchmarks, the reviews rolled in and showed that Windows on Arm was indeed capable of matching and beating Apples MacBook Air. Qualcomm even hired the Im a Mac guy to promote Windows on Arm PCs, showing how confident it was in challenging Apples laptop dominance.The Surface Laptop 7 is one of the best Windows laptops available right now. Photo by Chris Welch / The VergeMicrosoft and Qualcomm also worked closely with developers to make key apps compatible, and its now very rare to run into an app compatibility issue that cant be solved by a native Arm64 version or Microsofts improved emulator. Even Google, which previously shunned Windows Phone, has created Arm64 versions of Chrome and Google Drive to support Microsofts efforts. With developers continually providing native versions of their apps, it makes it a lot easier to switch to a Windows on Arm laptop. The only big exception is gaming, where x86 still reigns supreme for compatibility and performance.Intel didnt sit still while all this Windows on Arm hype was occurring, nor AMD. Intel struck back with Lunar Lake at IFA in September, delivering impressive performance and battery life improvements. AMDs latest Ryzen AI chips are also competing directly with Qualcomm, and both AMD and Intel have the key advantage of game compatibility that Windows on Arm is definitely not ready for.While were still waiting for an M4-powered MacBook Air, Apple did refresh its cheapest MacBooks in October with a surprise upgrade to 16GB of RAM. Apple would probably argue its related to Apple Intelligence, but the unusual change came months after Copilot Plus PCs launched, with a minimum of 16GB of RAM at price points that challenge the MacBook Air. Apple did manage to squeeze its new M4 chip into the MacBook Pro recently, though, showing that Qualcomm has some ground to make up in 2025.Apple and Microsoft have both been focusing on AI-powered features for laptops this year, and the end results have been underwhelming on both sides. While a lot of the initial Copilot Plus PC buzz was around Windows on Arm, Microsoft also rolled out some Windows AI features on these devices in June.Incomplete RecallThe flagship feature was supposed to be Recall, a feature that snapshots mostly everything you do on a laptop and then lets you recall moments or scroll through a timeline of how youve used your PC. But because Recall was met with privacy and security concerns, undermining Microsofts entire Copilot Plus PC marketing effort, Microsoft was forced to delay Recall several times to improve its security. In fact, it has only recently appeared in test versions of Windows. However, I dont think Microsofts stumbles with Recall will mean the company slows down with its Windows AI efforts. Windows chief Pavan Davuluri recently told me that the very future of Windows is about cloud and AI, so expect a lot more of this in 2025.Microsoft is increasingly focusing on Windows AI features like Recall. Image: MicrosoftComing in 2025Next year will also be a fascinating battle between x86 and Windows on Arm. AMD and Intel are teaming up to fend off Arm-based chips from Qualcomm, and Intel is facing a period of turbulence after ejecting its CEO, facing desktop chip issues, and a wave of layoffs earlier this year.Its hard not to see 2025 as the year that Windows on Arm continues to eat into the laptop space. A Dell leak revealed Qualcomm is preparing new chips for 2025, and the chip maker has also been rolling out cheaper Arm-based chips to bring laptop prices down. Id expect well see more of those at CES in January, alongside the usual slew of laptops that set the stage for the year.The Dell leak also hinted at Nvidias next-gen GPU plans, which now look set for a CES announcement. Leaks suggest well see RTX 50-series desktop GPUs and even the laptop variants, with OEMs rumored to be preparing new models to show at CES. Given the Windows on Arm gaming situation, a new generation of Nvidias GPUs could help generate fresh excitement around x86 laptops throughout 2025.Nvidia might also be planning to help the Windows on Arm effort. The chip maker has long been rumored to be planning to launch Arm PC chips as soon as 2025. Nvidias expertise in AI chips and gaming could certainly shake up the Windows laptop world and make Windows on Arm even more enticing.Whatever happens to laptops in 2025, you can guarantee that theres going to be fierce competition between Intel, AMD, and Qualcomm. That should make for an exciting year in the world of Windows laptops.