Microsoft on Friday officially dropped development of Internet Explorer for Macintosh. The company’s Macintosh Business Unit (MacBU) will release an update for the OS X version of the browser on Monday that will have security and performance enhancements, but no new features. Microsoft said it would continue to support Internet Explorer 5 for the Mac for the foreseeable future, but development of the browser has been discontinued. Any future updates to the browser will only contain maintenance or security fixes, no new features.