You can use the bal:Condition element to block installation of bundles based off a condition. You can combine this with an util:RegistrySearch element to search for a registry key that stores the current version of Windows:
<util:RegistrySearch Id="CurrentBuild" Variable="CBNumber" Result="value" Root="HKLM" Key="SOFTWARE\Microsoft\Windows NT\CurrentVersion" Value="CurrentBuildNumber"/>
<bal:Condition Message="Windows 10 Anniversary update or later is required.">
CBNumber > 14390
</bal:Condition>
Here, the CBNumber property of any Windows 10 build later than the Anniversary edition, which has a build number of 14393, will allow the setup to proceed, but any earlier versions will be blocked. You'll also need to add references to the WiX bal and util extensions at the top of your source file:
<Wix xmlns="http://schemas.microsoft.com/wix/2006/wi"
xmlns:bal="http://schemas.microsoft.com/wix/BalExtension"
xmlns:util="http://schemas.microsoft.com/wix/UtilExtension">