At WinHEC 2002 Microsoft announced that Windows Vista (codenamed "Longhorn") would include advances in speech recognition and in features such as microphone array support as part of an effort to "provide a consistent quality audio infrastructure for natural (continuous) speech recognition and (discrete) command and control." Bill Gates stated during PDC 2003 that Microsoft would "build speech capabilities into the system — a big advance for that in 'Longhorn,' in both recognition and synthesis, real-time"; and pre-release builds during the development of Windows Vista included a speech engine with training features. A PDC 2003 developer presentation stated Windows Vista would also include a user interface for microphone feedback and control, and user configuration and training features. Microsoft clarified the extent to which speech recognition would be integrated when it stated in a pre-release software development kit that "the common speech scenarios, like speech-enabling menus and buttons, will be enabled system-wide."