This is the first post in a series looking at some of the new features that you will find in Joomla 3.7 which is scheduled for release in March. For some people the Router changes are something that they have been waiting ten years for.
UPDATE 23 March. The Router will NOT be in Joomla 3.7. More info from the Release Leader.
One of the main, if not the main, things that makes Open Source software different is that the code is freely available and anyone can contribute fixes and new functionality. All those contributions need people to test them and the more people that help to test then the better the code will be and we will all benefit.