IOI 2018 took place in Japan in September, 2018. More info is available on the official website.
Just happened IOI 2018 in Japan
The 12th volume of the journal "Olympiads in Informatics" has been published, and it includes several research papers and reports.
You can find the contents by going to this page: IOI Journal - Contents.
Additionally, we have published the agenda for the IOI Conference which will take place during the IOI, in Japan.
You can see the agenda here: Agenda.