Looks like many of the contest organizers are planning well in advance for 2017. The 4th Summer Camp and Contest in France is scheduled for June 24 and 25. We assume that it's the contest date and maybe in the week before there will be the camp. More details are to be announced: BMX Flatland Summer Camp Contest 4.
The annual Wheels and Fins event in the UK is going to include a flatland contest again. Matti Hemmings is organizing this one and already provided many details: Wheels and Fins 2017