The NPSP 3.0 is a set of managed packages installed on Salesforce to customize the platform for some common nonprofit use cases. It is the most current version of the Nonprofit Starter Pack, and it has some key improvements and new features compared to the previous version, the NPSP 2.0. A key feature of the NPSP 3.0 is that it automatically receives updates from the Salesforce Foundation, meaning that new functionality is added to your instance without needing to install new packages. Furthermore, the older NPSP packages are no longer supported by the Salesforce Foundation and no longer receive updates. Upgrading to the NPSP 3.0 means your package will remain current and as new features are released to improve the user experience, you will receive them!