The European Commission has updated the European Union Public License (EUPL): Seven clarifications were made that did not attempt to change the original meaning. The EUPL 1.1 is made available in all official languages of the European Union and the originators ensure that is is compatible with national copyright laws in all member states. The EUPL thus reaches a maturity other licences cannot provide and – unlike the GNU General Public License – it stays politically neutral and does not dillute the ownership attribution for your work.
For software developers, in particular from the public sector, the EUPL should be considered when you start new openly licensed software projects.