The PHP 10.0 Blog has the quick and dirty version posted today of the full namespaces readme that's been posted about the upcoming namespace support in PHP.
We now have an implementation of namespaces in PHP 6 HEAD, so here's a short FAQ about how they work for those that are too laz^H^H^Hbusy to read the whole README.namespaces.
It's an FAQ sort of list (quick questions and answers) with eleven questions that give an overview of what will be supported. This includes why they've been implemented, what some of the syntax is and looks like and how they can be used in files.
Also note namespaces are still work in progress, so it may happen it would be changed a lot when it’s released.