Microsoft released Windows 10 Insider Preview Build 15031 to Fast ring members of its Windows Insiders program. Among the build's improvements are picture-in-picture support, more Game Bar compatible titles, and a bunch of bug fixes ahead of the Windows 10 Creators Update's broader release.
The picture-in-picture mode--or, as Microsoft calls it, the new Compact Overlay window--works like you'd expect. Apps will be able to occupy a corner of the display on top of every other window so you can watch videos or use communications services while using other software. Microsoft said that updates for the Movies & TV app and Skype Preview will take advantage of compact windows "in the near future" and that other software can follow suit. (At no point does the company make the obvious "We heard you like windows, so we updated Windows to let you see windows on your Windows windows" joke.)
This preview build also expands the list of titles with which the Windows Game Bar is compatible. That bar makes it easier to record gameplay or capture a screenshot within a game via keyboard shortcuts. Microsoft said 52 more titles, ranging from Need for Speed and Grand Theft Auto V to Mass Effect 3 and Planet Coaster now work with the Game Bar. The company also reiterated that gamers can adjust the feature's settings to improve performance.
Another marquee feature of Windows 10 Insider Preview Build 15031 is the new Dynamic Lock. This allows Windows 10 PCs to automatically lock themselves when a Bluetooth-paired smartphone leaves its immediate vicinity. (A 30-second grace period helps ensure Dynamic Lock won't frustrate people who leave their desks for a moment.) This could prove useful for people who often forget to lock their PCs in an office setting, for example, or who don't want family members to be able to digitally snoop on them. Microsoft does say, however, that this build has some Bluetooth pairing issues.
Other updates are meant to squash a few bugs. Microsoft said it "fixed the issue causing popular games may experience crashes or black screens when trying to load due to a platform issue" and made sure Game Mode, which improves game performance, isn't enabled by default. The company also fixed a bunch of user interface problems, language-specific issues, and other frustrating obstacles to using the preview build. Many of these bugs were likely found as part of the Windows 10 Creators Update Bug Bash running until February 12, which tasks Insiders with finding as many bugs as they can.
The Windows 10 Creators Update is expected to debut some time this Spring. A full list of feature updates, bug fixes, and known issues can be found on Microsoft's website.