This is a rude press release, to say the least. Microsoft warns that some x64 applications may not run at this point, and you are encouraged to install updated graphics drivers along with a redistributable preview that allows 64-bit ARM and C ++ x64 applications to run. at the same time. You won’t want to use this Windows 10 preview on a critical machine.
Microsoft is adding x64 emulation at a critical time. Apple recently released the first Macs based on its internal ARM silicon, and they already run non-native 64-bit applications with relative ease. This is a significant benefit for anyone who wants the efficiency benefits of ARM without giving up the 64-bit applications they might need. It will be some time before x64 emulation is polished enough to be widely available on Windows 10, but that might justify keeping the Microsoft platform if you’re comfortable with less than ideal performance for Windows 10. some programs.