The compiler and the IDE are compatible with Windows Vista. The compiled files are full Vista capable and the look and feel is the same.
New file dialogs (TFileOpenDialog, TFileSaveDialog) are available for Windows Vista. Also the new message box from Windows Vista (TTaskDialog) is available. There is only one drawback: The components do not work on Windows XP and they have no fallback system. They only create a error message box.
Delphi 2007 for Win32 supports AJAX-based RAD VCL for the Web development.