PHP GTK 2 has gone beta. Announcement post here. It has been a long time coming with the Alpha release almost a year ago. No date is set for the full production quality release.
So what is PHP-GTK? A PHP extension that combines with GTK+ 2, to give the ability to create rich desktop applications.
PHP-GTK 2 uses PHP5 and this version has improved Objected Orientated capabilities, Unicode support and a Model-View architecture.