Hi Riccardo,
Thank you for your interest in Syncfusion products.
We have included Office 12 rendering for Windows MenuStrip control in our latest release v.4.1. We also included a ToolStripEx control with Office 12 Style. Please refer to the screenshot attached below that shows this office12 rendering.
Please let us know if you have any questions.
Regards,
Mano
Office12Demo_snap.zip