Microsoft today announced the availability of a new preview build of Windows 10 Mobile for Windows Insiders.

The new update — Build 10536, following Build 10512 from last month — consists mainly of bug fixes, but adds some handy new features, too.

An update to the Photos app introduces a folder view that makes it easy to see OneDrive and PC folders from within the app. On a phone, the user can see folders on an SD card.

Also, on phones, photo zooming and panning functions are faster, and “favorite” labels have been added. This update hasn’t yet rolled out for PCs but will roll out shortly, wrote Gabe Aul, vice president of the engineering systems team in Microsoft’s Windows and Devices Group, in a blog post.

Microsoft had already introduced one-handed mode for larger phones in the OS, but many Insiders said they’d like it on smaller phones, too. This build brings one-handed mode on all Windows 10 devices (activated by pressing and holding the Start button).

Now, the bug fixes. Problems with the mobile hotspot function have been fixed. Two-factor authentication when setting up a device for both text and phone authentication has also been fixed. The pinch and zoom in Maps now works as expected.

Voice input has been updated to add support for Japanese (Japan) and English (India) speech recognition.

The Start screen will now successfully load (instead of failing with “Loading …” displayed in an endless loop). “We are still tracking down an issue were it may show ‘Loading …’ for a few seconds,” Microsoft said in a blog post.

But the update also adds some meaningful new functionality.

Build 10536 comes roughly a month after the release of Windows 10 Mobile preview Build 10512.

Windows 10 Mobile will reportedly come out of preview and launch for everyone sometime this quarter. Build 10536 may be one of the very last previews that Microsoft releases before that.