Microsoft has provided some clarification about what versions of Windows 10 will be upgraded and what they will be upgraded to.
Here’s the rundown:
Windows 7 upgrade• Windows 7 Starter will be upgraded to Windows 10 Home
• Windows 7 Home Basic will be upgraded to Windows 10 Home
• Windows 7 Home Premium will be upgraded to Windows 10 Home
• Windows 7 Professional will be upgraded to Windows 10 Pro
• Windows 7 Ultimate will be upgraded to Windows 10 Pro
Windows 8 upgrade• Windows 8.1 will be upgraded to Windows 10 Home
• Windows 8.1 with Bing will be upgraded to Windows 10 Home
• Windows 8.1 Pro will be upgraded to Windows 10 Pro
Windows Phone• Windows Phone 8.1 will be upgraded to Windows 10 Mobile. The availability of the upgrade may vary by hardware maker, mobile operator or carrier.
Excluded editions
•Windows 7 Enterprise, Windows 8, Windows 8.1 Enterprise, and Windows RT/RT 8.1 are excluded from the free upgrade offer.
This should help offer some clarity to consumers wondering about supported versions.
source:windows10update
