Microsoft Ships PowerToys Dev Preview v0.103.3012.0
The latest Dev preview of Microsoft's open-source Windows utility suite is mostly quiet, but it plants the seeds for a bigger Mouse Jump overhaul.
Microsoft has pushed a new Dev preview of PowerToys, version 0.103.3012.0. It landed today, built from commit e9149e2 on the main branch of the project's GitHub repo, and it bundles 19 merged pull requests since the previous Dev build.
Here's the honest read: most of that work is boring in the best possible way. This isn't one of those releases where you get a shiny new feature. It's a refinement pass, a hardening sweep across the modules you actually touch daily. There's one exception, though, and it points at something bigger coming down the line.
What PowerToys actually is
PowerToys has been around in one form or another since the Windows 95 days. Tweak UI, Power Calculator, ClearType Tuner, a lot of the old Windows Shell utilities eventually got absorbed into the OS itself, line by line. When Microsoft relaunched the project as open-source in September 2019, FancyZones and the Shortcut Guide led the charge. It now ships with 25+ utilities, from the Color Picker and Screen Ruler to ZoomIt and Mouse Without Borders.
Two channels matter here. There's Stable, the polished track that most people should just use. As of late October 2026 that sits at v0.102.2933. Then there's the Dev preview, where bleeding-edge builds from main ship frequently, sometimes multiple times a week. Dev uses a higher minor number, which is why you'll see 0.103 while stable sits at 0.102. Install it if you like living on the edge, but Microsoft says only testers should.
Keep in mind that this preview is essentially three weeks of contributions packaged into a single installer for people willing to chase bugs ahead of a future stable release.
What actually changed
I'll skip the full list of 19 PRs and hit the ones worth your attention.
The Settings app gets three small fixes. The "Check for updates" button now actually checks instead of replaying a cached result. Unchecked checkboxes no longer show a lingering ghost mark after you toggle a settings group off and back on. The What's new panel retries after a transient network blip rather than throwing an error immediately.
Image Resizer gets a genuinely useful CLI fix. On a fresh profile, before settings.json even exists, the --filename flag was ignored and you'd end up with <name> (Custom).<ext> instead of what you asked for. That's corrected now. Non-numeric input for monitor, size, or quality used to crash both the FancyZones and Image Resizer CLIs; they now exit cleanly with code 1 instead.
Mouse Without Borders keeps its clipboard handshake tied to the active desktop session across socket restarts. A new 10-second connection timeout and peer verification mean copy-paste across machines doesn't fall over when a socket resets. ZoomIt gets similar hardening for its DemoType text-loading path.
The rest is housekeeping: NuGet cache hygiene, CodeQL security scanning moved to a nightly pipeline, a dependency bump from MessagePack 3.1.7 to 3.1.9. You won't notice any of it. That's the point.
The real story is Mouse Jump
Most people will scroll past this part, so it's worth stopping for. Under the Development section, the release notes mention staged Mouse Jump library code that isn't wired into anything yet.
Mouse Jump is the thing that throws a thumbnail of all your monitors when you hold the hotkey, letting you snap the cursor to another screen with a click. Right now it renders a single bitmap. The staged work, roughly 4,895 new lines across folders named Capture, Bezels, Blurring, Telemetry, and Win32Gen, points toward a parallelized screenshot pipeline, WinUI-native composite rendering, rounded bezel corners, and real highlight and shadow effects. There's even talk of possible Mouse Without Borders integration down the road.
The author, Michael Clayton, was explicit that none of it is active. It's dormant library code staged in two steps so reviewers can eyeball the scaffolding separately from the eventual integration. He added a self-contained local telemetry helper that writes timing data to a text file, ships with no remote delivery, and stays off by default. A follow-up PR already sketches rendering the preview over your wallpaper with an acrylic taskbar. Not a huge stretch to call this the foundation for a genuinely better Mouse Jump, even if the payoff is months out.
Head here to the GitHub release page for the downloads. Four installer variants are provided, in both per-user and machine-wide (all-users) configurations, for x64 and ARM64 architectures.
