Thursday's build is for Fast Ring PC Insiders only. It includes mostly bug fixes and relatively few new features. Microsoft officials said they wanted to get a fresh build out to Insiders ahead of the company's Windows 10 Bug Bash that kicks off Friday.
Build 15025 will only work for those with x64-based Windows 10 test machines. Those with x86 machines cannot download this build, according to Microsoft's release notes.
Due to a known bug, Build 15025 will only work for those with 64-bit/x64-based Windows 10 test machines; those with 32-bit/x86 machines cannot download this build, according to Microsoft's release notes. Microsoft plans to release ISOs for this build by the end of the week and Win32-bit PC users will be able to update from the ISOs.
Build 15025 includes the promised braille support in Narrator for visually-impaired users. There's also a new mono-audio option for these users in Ease of Access settings. Some improvements to the night-light settings are also part of this build.
Microsoft added Collections to the Windows 10 Feedback Hub that are designed to reduce duplicate pieces of feedback by grouping feedback for similar problems and suggestions together into single items.