Meanwhile, the Feedback app, which has gotten mixed reviews from testers, has been revamped in several ways. For example, the screenshot button is now more prominently displayed, there are more options for sorting feedback posts, and a feedback search bug has been fixed.
In response to tester feedback, Microsoft has also fixed "a lot" of issues causing previous builds to crash and hang, made it easier to find the charms and full screen buttons in modern apps and made it possible to hide the Search and Task View buttons on the taskbar.
Build 9879 will be delivered via Windows Update to testers in the "fast" delivery track of the program. Those in the "slow" track will get it at a yet undetermined date "after we see how everything goes" with the first batch of testers, according to Aul. At that time, Microsoft will also make available for the first time an ISO image of Windows 10 TP, which has been a frequent request from members of the Windows Insider program.
Microsoft is warning of known issues testers may experience with this new build, including a black screen when trying to log in to or unlock the device. To get rid of the black screen, users will need to reboot their computer by holding down the power button. It's also possible that the space occupied by the OS will grow to more than 20 gigabytes as a result of driver duplication, which will prevent the build's installation in computers running low on local storage.
Windows 10, the much awaited successor to the problematic Windows 8/8.1 operating system, is expected to ship commercially by mid-2015.
Sign up for Computerworld eNewsletters.