I'm inaugurating this blog with an announcement: ManagedEsent is Metro Compliant.
What does this mean to you? If you write a Metro program in C#, you can grab ManagedEsent from CodePlex (http://managedesent.codeplex.com) and you can use your favourite ESENT APIs from from C#, and still pass certification.
The update is currently available only in source form (http://managedesent.codeplex.com/SourceControl/list/changesets). Binaries will be coming.
Don't hesitate to start new discussions or bug reports in the Discussions area (http://managedesent.codeplex.com/discussions).