Developers recently received the Mac OS X 10.4.2 update from Apple. The new 8C46 build contains new bug fixes related to Dashboard memory management and iChat video conferencing. It also includes a new feature called Widget Manager:
The new widget manager reportedly has the appearance of a widget itself -- but unlike most widgets, it cannot be flipped around to reveal special options or preferences. The widget manager's design is faintly similar to that of the iChat buddy list; it is laid out as an oversized window that lists all of a user's installed Dashboard widgets. Running down the left side of the list are checkboxes which allow the user to quickly enable and disable widgets. Along the right side of third-party widgets are red stop sign-like icons that allow the user to delete widgets -- upon clicking the icon, an overlaying dialog asks for confirmation.