Sources tell me that we’ll hear about new AI models in Windows, a new reasoning model from Microsoft AI, and a Copilot “super app.” But perhaps more importantly for Build attendees, I understand that Microsoft will be revealing more about its work on improving the experience of Windows for developers. I’m told that Microsoft will unveil a new Windows 11 developer optimized experience this week, which includes many of the things that developers have been asking for in Windows: a distraction-free environment with pre-installed apps, tools, and scripts.

I also expect to hear more about Microsoft’s efforts to rewrite parts of Windows 11 to improve performance and the overall experience. Microsoft outlined its plan to fix Windows 11 earlier this year, and we’ve started to see plenty of early improvements already. The Windows Insider team is getting ready to show off more customization changes later today, ahead of the Build keynote tomorrow.

Microsoft will also have more news about how Windows is adapting to new silicon like Nvidia’s RTX Spark. I’m told there will be a bigger focus on local models running on Windows at Build this year, allowing developers to tap into local compute instead of relying on costly cloud models. Windows chief Pavan Davuluri teased last week that “something new is coming for developers” at Build, so I’m expecting to hear more about the next generation of Microsoft’s smaller AI models. Miniature RTX Spark PCs from Microsoft and HP were also notably absent in a lineup of OEMs during Nvidia’s Computex keynote, so perhaps a little something more is on the way.

While Satya Nadella will discuss the new RTX Spark announcement with Nvidia CEO Jensen Huang during his keynote, I’m also expecting we’ll hear from Qualcomm about its continued work with Microsoft to grow Windows on Arm. Qualcomm and Microsoft laid most of the groundwork for the Arm improvements in Windows 11, allowing Nvidia to return to Windows on Arm after a rocky start with the Surface RT. Microsoft now has to balance two major Arm silicon providers, just like how it’s had to keep both AMD and Intel happy over the decades.