The EU regulatory framework on GMOs has always been featured by a high degree of harmonisation and centralisation, resulting in a loss in its States’ regulatory power. However, the EU harmonisation process has gone through several controversies over the years; as a consequence, the EU institutions have increasingly striven to support the pressing requests of Member States with a view towards granting the latter greater room to manoeuvre and decide as regards GMOs cultivation, starting from coexistence concerns. This article briefly analyses the changes recently introduced by means of Directive 2015/412/EU as regards the cultivation of GMOs, from the point of view of the evolution of the EU regulatory framework and national attitudes towards the risks and benefits linked to biotechnology derived products and their production. According to the new Directive 2015/412, amending Directive 2001/18/EC on the deliberate release into the environment of GMOs, Member States are entitled to enact measures restricting or banning the cultivation of GM crops on their territory complying with several so called “compelling grounds”. In the light of the diverse nature of such reasons, and considering the hostility expressed by Member States towards GMOs over the years, some doubts arise as to whether the exercise of the new regulatory powers by Member States will comply with the ‘EU acquis’. What is certain is that today, after more than a decade since the big reform of 2001-2003, the EU GMO regime is still one of the much-contested policy sectors in the EU.