On Codewalkers.com today from Matt, there's a new post with a look at the talk that's been flying around about namespaces in PHP.
Namespaces are on the discussion table for PHP6. Why not for a version 5.2? If you feel that Namespaces should be included in PHP and included sooner rather than later, sign the PHP Namespaces Petition.
It has come up many times in the past and it is now squarely on the table again - Namespaces in PHP. If you are interested in seeing this feature come to light, you might be interested to check out php:namespaces.
With the patch that's already been developed by Jessie Hernandez, namespaces in 5.2 is less of a fantasy that one might think...