Along with this launch, they have also upgraded the PHP SDK they offer to a shiny, new version - 4.0. According to DynamicWebPages.de, they've added the ability to make a request without an SSL certifiicate, made installation easier, and more.
Their prefered method of installation has moved over to a PEAR-based setup, making it as easy as going to the source directory and calling "pear install package.xml". Of course, not everyone has access to the server their running on (shared hosting), so they provide another method just for them. It's still simple, but requires the inclusion of files on each execution.