This requirement to state intent is primarily to make sure that project teams are paying attention. While it's true that I can probably hunt down last year's participants and just add them to the list, doing so would defeat this primary goal.
Many projects have already declared their intent.
If your project is not listed, or is missing release information, please announce your intent soon. If you're dropping out let us know that as well.
Note that in early 2018, we will start disabling projects that do not state their intent from the aggregation build.
Let me know if you have any questions.