On 23 March 2016, Regulation (EU) 2015/2424 of the European Parliament and the Council amending the Community trade mark regulation (the Amending Regulation) entered into force. The Amending Regulation contains a number of provisions that will apply as and from 1 October 2017, as they had to be developed by secondary legislation.
You can see a short summary on the topic in the EUIPO video for further details.