The contest duration is 4 hours and there will be 5 problems, which is the same as the 16th JOI Final Round. Problem statements will be provided both in Japanese and English this year.
Details are available in contest information .
Good luck and have fun!
UPD: Registration is available now.
UPD2: Judge server is open now. You can submit your solutions. You need remake your account to use judge.
UPD3: Editorial will be provided only in Japanese. Judge data and sample source codes will also be provided.