@WinHEC today Microsoft has showed all of the update paths for Windows 10. This Upgrade Matrix shows if you can go directly to Windows 10 or not. There is a few interresting things in this overview.
As expected there will be no upgrade to Windows 10 for Windows RT. This is another reminder that the RT Plattform is not going to be kept alive in the future.
For Windows 7 SP1 and Windows 8.1 S14 (Update 1) it will be possible to upgrade directly from Windows Update. For all other supported scenarios you need to to an step by step upgrade or use an ISO media to perform the upgrade. Continue reading