This paper reports the results of a prospective study on information system development trends. It is based on the observation that SMEs seek opportunities to endow their CMS-based IS with CRM, e-commerce and ERP/ERM functionalities. Using publicly-available release data, we investigated the dynamics of subsequent versions and new functionalities of the most popular open-source CMSs - Drupal, Joomla!, and WordPress. Special attention was paid to software innovations that make possible the use of CMS-based applications for typical EIS purposes. The software technology race was modelled by a system of quasi-linear stochastic equations with state variables describing the upgrade generation time. Two such models have been built and compared for the above CMSs. Trend extrapolation with vector autoregression allowed us to predict ERP-related functionality development prospects until 2025. We maintain that the deployment of CMS-based ERP/ERM may have a relevant impact on business models and strategic ICT alignment in SMEs.