ImpressCMS TNG is ImpressCMS - 'The Next Generation'. This version of ImpressCMS is being developed in parallel to the production-ready branch, as a total re-thinking of the way ImpressCMS is structured internally.
Previously this was labeled as ImpressCMS 2.0, but as more and more of the features that were identified for the 2.0 release were added to the 1.5 development branch, we decided to review our version numbering : 1.5 became 2.0 and 2.0 became TNG.
Test the preview 100% free and tell us about your experience in the forums.
We have a separate installation walkthrough for ImpressCMS TNG which can be found HERE