Microsoft UI:Win32/MFC - WinForms - WPF - Sliverlight - WinRT ? Which technology does MS Office use ? Which one will MS Office 2015 use ? If you want to creat

Microsoft UI:Win32/MFC - WinForms - WPF - Sliverlight - WinRT ? Which technology does MS Office use ? Which one will MS Office 2015 use ? If you want to create a word or excel document in the future, will you use a tablet with Metro or "classic desktop" with a mouse and keyboard ?