IOI 2018 took place in Japan in September, 2018. More info is available on the official website.
Just happened IOI 2018 in Japan
IOI 2018 - Call for Tasks
The organizing committee of IOI 2018 invites you to submit tasks for IOI 2018. All people who will not participate as a contestant in IOI 2018 are welcome to submit tasks.
Information about how to design and submit the tasks are available at: https://ioi2018.jp/call_for_tasks.html
The submission deadline is now extended to January 5, 2018.