As you are aware I am constantly working to improve PHPFusion. I can now confirm that the next evolution of PHPFusion, version v5, is under development and is progressing at a reasonable pace (see the dev log). There is no release date yet, and it will be a fair while before it enters beta. The reason is that I want to add a number of new features which will require time to develop. I am also hoping to add some kind of plug-in feature to make the addition of modifications easier. Of course I also want to improved some of PHPFusion's current features too. Will PHPFusion v5 support upgrades from existing versions? Yes, definitely.