NewsGator Technologies has released NetNewsWire 2.1b16, the first public beta of version 2.1, and the latest update to its easy-to-use RSS and Atom newsreader for Mac OS X. A few of the new feature highlights of this release include: Universal Binary support for Intel-based Macs; NewsGator syncing; performance enhancements; email-link and email-contents commands; user interface changes; sorting subscriptions by attention; bug fixes; and more. NetNewsWire 2.1b16 requires Mac OS X 10.4.0 or later. [Thanks to MacMinute reader Justin Miller for this news tip.]