On the SitePoint PHP Blog, there's a new post from Harry Fuecks pointing out an extension for PHP that allows it to use the Cairo graphics library.
Cairo is the "next generation" vector graphics library for Linux and very cool to have it available in PHP. Also cool about the extension was created using PEAR::CodeGen_PECL, which Hartmut describes here: look Mum - no C! (well almost).
Harry also asks if, with the rise of new technologies like this, if it's time to make the move to deprecate GD from normal PHP use - at the same time, removing another hurdle in PHP's path towards being thread safe.