> IE is hardly evergreen. IE11 is curiously not available on Windows 8.0, although it is available on Windows 7 and Windows 8.1
Windows 8.0 will automatically update to Windows 8.1 so IE10 on Windows 8 will get automatically updated to IE11.
> They also publish update blockers [1]
You say this like it's a bad thing, some users don't want an evergreen browser. The point of the update blocker is to help those users.