A first beta version of PHPUnit-1.2.0, the next feature release of PHPUnit for PHP 4, and a second beta version of PHPUnit2-2.2.0, the next feature release of PHPUnit for PHP 5, have been released.
The major improvement in PHPUnit-1.2.0 will be the addition of a PHP-GTK frontend that has been contributed by Scott Mattocks. You can read about the new features of PHPUnit2-2.2.0 here.