Microsoft has today released a brand new build of Windows 10 Redstone for Insiders to begin testing on their machines. Build 11099 is very similar to 11082, being that there are not many new features as most changes are still happening under the hood.
Build 11099 has just started rolling out for Insiders in the fast ring, so if you can't see it yet that's probably because the update is still propagating throughout the Windows Update servers, so give it a bit of time. Microsoft is using these early development builds to improve the OneCore system that underlies the operating system.
Windows 10 Redstone is the codename for Microsoft's next major update for Windows 10, which is expected to include Edge extensions, improved UX, Continuum enhancements and more. In the meantime, will you be installing this preview build? Let us know below!