the author of this app says:
ReleaseDates is a calendar database that can be imported directly into MS Outlook and then synchronized with your Outlook-compatible PDA (such as the Palm(tm) device and Windows CE).
The database contains release dates for all known movies (theatrical and VHS), as well as musical and PC software titles headed for retail in the next three months and beyond.
The database is updated every other week to ensure that you have the most up-to-date list of releases. Now it official release dates for all of your favorite musical artists and movies.