Microsoft, making good on its promise to regularly push out new versions of Windows 10 Technical Preview, has released build 9879 -- and there's a surprising number of changes under the hood. Most notably, Windows 10 is now starting to look like a new (or at least different) operating system -- but there's also some nice tweaks, such as the ability to remove the new Search and Task View buttons from the taskbar, and an early look at the new 'Continuum' Start menu.