See here for a copy of the minutes of the last FCA MiFID II Implementation Trade Association round table meeting. As can be seen from one of the first items, there is still no concrete news on when we may see the latest version of the implementing measures, i.e. the Delegated Act and updates Regulatory Technical standards(RTS).
The commodity and energy trading sector are particularly interested in certain elements of these, such as RTS 20 and 21, which define how the Ancillary Activity test and Position Limits will work. Without clarity, it is hard for the sector to make appropriate preparations.