Opera Software on Wednesday released Opera 6.03, an update to its alternative Web browser that adds support for the upcoming release of Mac OS X 10.3 Panther. “The release of Opera 6.03 for Mac allows for continued use on Panther while development continues on Opera 7 for Mac to be released later this year,” notes the developer. “Additional modifications found in version 6.03 include bug fixes and the removal of the start-up dialog for unregistered browsers.”