Here's an excerpt from the release notes for the Linux version:
Version 1.12b.0 + Added cut, copy, and paste items in the edit menu. - Removed Boxsizers. + Added GridBagSizer * Repositioned things slightly. + Added some new functionality to the undo and redo menu items--that is, they can now grey out. + Added clear menu item to edit menu. + Added a taskbar icon/favicon thingy. + Added a debug submenu to the Help menu + added Stats to the debug submenu
Download the Linux release
Download the Windows release
NOTE: Here's a link to the release notes for the Windows version