Ya, that’s right. But I think this is only C++ and C# at the moment.

JavaScript on Chackra's engine, VB.NET, C# and C++. F# support is still to be done, due to how .NET Native handles MSIL.

Borland was in the process of doing it for Delphi and C++ Builder, but I don't know the current state. Originally they were only replicating the Metro UI, back on Windows 8.