"The European Union has announced a landmark decision which will see roaming charges for calls, mobile data, and texts inside all member states axed completely in the next two years. The EU has revealed that, following negotiations, a provisional date of June 2017 has been settled upon by all 28 member states."

See:
http://www.knowyourmobile.com/mobile-phones/eu-roaming/23209/eu-axe-data-roaming...