The developers of ImpressCMS (www.impresscms.org) have produced a major update and have released version 1.3 as a stable version, ready for live websites. This release is a major revamp of the underlying code, designed to be faster, smaller and better. This also continues to keep pace with the developments in other open source tools - ImpressCMS 1.3 is fully compatible with PHP 5.3 and MySQL 5.2 and above.
Version 1.3 is a transitional release for ImpressCMS, as it is the leading towards the removal of a majority of legacy functions. Most of the modules and themes currently supported by earlier versions of ImpressCMS do work in the new version and that was a major consideration in this release. But, not all modules will be able to make the leap. You are well advised to do some testing before you apply this upgrade. There are some new messages in the developer debug area to assist with the transition.