Initiative Spartan
Initiative Spartan
Project Spartan is designed for Windows 10 but also offers compatibility with older versions like 8.1.
It appears Windows 10 exclusives are similar to DX12 offerings.
It makes sense as a marketing approach for them to restrict the offer to W10. This way, they can attract more users by focusing updates exclusively on that platform. Allowing W7/8 users to download might limit their ability to quickly draw in more people to W10.
I believe it will be limited to Windows 10 because of the extension of WinRT. It's designed to largely supersede IE in Windows 10 with a fresh browser that starts from scratch, leaving behind any past IE complaints. Additionally, it leverages WinRT, which offers a significant edge over what IE could provide even if it were a top-tier browser. Moreover, it will function identically on all devices—phones, tablets, and PCs—just like the rest of the new Universal Applications.